2018 United States Senate elections

For related races, see 2018 United States elections.

2018 United States Senate elections

November 6, 2018
33 of the 100 seats (Class 1) in the United States Senate (and 2 special elections) 51 seats needed for a majority
Majority party Minority party   160x180px 160x180px Leader Mitch McConnell Chuck Schumer Party Republican Democratic Leader since January 3, 2007 January 3, 2017 Leader's seat Kentucky New York Last election 52 46 Seats before 51 47 Seats after 53 45 Seat change 2 2 Popular vote 34,723,013 52,260,651 Percentage 38.80% 58.40% Swing 3.60% 4.50% Seats up 9 24 Races won 11 22   Third party   Party Independent Seats before 2 Seats after 2 Seat change Popular vote 892,988 Percentage 1.00% Swing 0.50% Seats up 2 Races won 2
Template:2018 United States Senate elections imagemap Results of the 2018 general and special elections:      Democratic gain      Republican gain      Democratic hold      Republican hold      Independent hold      No election Rectangular inset (Minn. & Miss.): both seats contested
Majority leader before election Mitch McConnell Republican Elected Majority leader Mitch McConnell Republican

The 2018 United States Senate elections were held on November 6, 2018. 33 of the 100 seats were contested in regular elections while two others were contested in special elections due to Senate vacancies in Minnesota and Mississippi. The winners were elected to six-year terms running from January 3, 2019, to January 3, 2025. Senate Democrats had 26 seats up for election (including the seats of two independents who caucus with them) while Senate Republicans had nine seats up for election.

To maintain their working majority of 50 Senators and Republican Vice President Mike Pence (who can cast a tie-breaking vote), Republicans could only afford a net loss of one Senate seat in the 2018 elections. The Republicans had a 52-48 majority after the 2016 elections, but they lost a seat in Alabama in December 2017 after senator Jeff Sessions resigned to become the U.S. Attorney General and Doug Jones won the resulting special election. Three Republican-held seats were open as a result of retirements in Tennessee, Utah and Arizona, while every Democratic incumbent ran for re-election. Democrats faced an extremely unfavorable map as they were defending ten seats in states won by Donald Trump in the 2016 presidential election and 26 in total while Republicans were only defending one seat in a state won by Hillary Clinton in 2016 and nine in total. Additionally, Democrats were defending five seats in states that Trump won by double digits in 2016.

The Republicans maintained and increased their majority, defeating Democratic incumbents in Florida, Indiana, Missouri and North Dakota. Democrats won two Republican-held seats, defeating incumbent Dean Heller in Nevada and winning an open seat in Arizona that was previously held by Jeff Flake.

Focus on competitive races

Democrats targeted Republican-held Senate seats in Arizona (open seat) and Nevada. Seats in Texas, Mississippi (at least one of the two seats) and Tennessee (open seat) were also competitive for the Democrats. Republicans targeted Democratic-held seats in Indiana, Missouri, Montana, North Dakota and West Virginia, all of which voted for Mitt Romney in the 2012 presidential election and Donald Trump in the 2016 presidential election. Seats in Florida, Ohio, Pennsylvania, Wisconsin and Michigan, all of which voted for Trump in 2016, were also targeted by Republicans. The Democratic-held seat in New Jersey was also considered unexpectedly competitive due to the corruption allegations surrounding incumbent Bob Menendez.

Partisan composition

Among the 33 Class 1 Senate seats up for regular election in 2018, twenty-three were held by Democrats, two by independents who caucused with the Senate Democrats and eight by Republicans. Class Two seats in Minnesota and Mississippi held by interim appointees were also up for election; both incumbent appointees sought election to finish their unexpired terms.

The map was widely characterized as extremely unfavorable to Democrats, as Democrats were defending 26 states while Republicans were defending nine. Of these seats, Democrats were defending ten in states won by Donald Trump in the 2016 presidential election, while Republicans were only defending one seat in a state won by Hillary Clinton in 2016. According to FiveThirtyEight, Democrats faced the most unfavorable Senate map in 2018 that any party has ever faced in any election.

The 2018 election cycle was the first midterm election cycle since 2002 in which any incumbents of the non-presidential party lost re-election. The number of defeated non-presidential party incumbents (4) was the most since the 1934 midterms.

Results summary

Parties								style="background-color:Template:Other Party (US)/meta/color" |	Total
			Democratic	Republican	Independent	Libertarian	Green	Other
Last election (2016)			46	52	2	0	0	0	100
Before these elections			47	51	2	0	0	0	100
Not up			23	42	0	—	—	—	65
	Class 2 (2014→2020)		11	20	0	—	—	—	31
	Class 3 (2016→2022)		12	22	0	—	—	—	34
Up			24	9	2	—	—	—	35
	Class 1 (2012→2018)		23	8	2	—	—	—	33
	Special: Class 2		1	1	0	—	—	—	2
	General elections
	Incumbent retired		0	3	0	—	—	—	3
		Held by same party	—	2	—	—	—	—	2
		Replaced by other party	1 Republican replaced by 1 Democrat						1
		Result	1	2	0	0	0	0	3
	Incumbent ran		23	5	2	—	—	—	30
		Won re-election	19	4	2	—	—	—	25
		Lost re-election	1 Republican replaced by 1 Democrat 4 Democrats replaced by 4 Republicans						5
		Result	20	8	2	0	0	0	30
	Special elections
	Appointee ran		1	1	—	—	—	—	2
		Appointee elected	1	1	—	—	—	—	2
		Result	1	1	0	0	0	0	2
	Total elected		22	11	2	0	0	0	35
	Net gain/loss		2	2					2
	Nationwide vote		?	?	?	>589,840	>200,393	?	?
		Share	?	?	?	?	?	?	100%
Result			45	53	2	0	0	0	100

Change in composition

Each block represents one of the one hundred seats in the Senate. "D#" is a Democratic senator, "I#" is an Independent senator and "R#" is a Republican senator. Arranged so parties are separated and a majority is clear by crossing the middle.

Before the elections

Each block indicates an incumbent senator's actions going into the election. Some "Ran" for re-election, some "Retired" and the remainder (without a note) were not up for election this year. Before the elections, Republicans held 51 seats, Democrats held 47, and independents held two.

D1	D2	D3	D4	D5	D6	D7	D8	D9	D10
D20	D19	D18	D17	D16	D15	D14	D13	D12	D11
D21	D22	D23	D24 Calif. Ran	D25 Conn. Ran	D26 Del. Ran	D27 Fla. Ran	D28 Hawaii Ran	D29 Ind. Ran	D30 Md. Ran
D40 Ohio Ran	D39 N.D. Ran	D38 N.Y. Ran	D37 N.M. Ran	D36 N.J. Ran	D35 Mont. Ran	D34 Mo. Ran	D33 Minn. Ran	D32 Mich. Ran	D31 Mass. Ran
D41 Penn. Ran	D42 R.I. Ran	D43 Va. Ran	D44 Wash. Ran	D45 W.Va. Ran	D46 Wis. Ran	D47 Minn. Appointee ran	Template:Party shading/Independent (US)/active | I1 Maine Ran	Template:Party shading/Independent (US)/active | I2 Vt. Ran	R51 Utah Retired
Majority →
R41	R42	R43 Miss. Ran	R44 Neb. Ran	R45 Nev. Ran	R46 Texas Ran	R47 Utah Ran	R48 Miss. Appointee ran	R49 Ariz. Retired	R50 Tenn. Retired
R40	R39	R38	R37	R36	R35	R34	R33	R32	R31
R21	R22	R23	R24	R25	R26	R27	R28	R29	R30
R20	R19	R18	R17	R16	R15	R14	R13	R12	R11
R1	R2	R3	R4	R5	R6	R7	R8	R9	R10

After the general elections

Each block indicates the results of each election. Some senators were "Re-elected", some were a "Gain" in the seat from the other party (either by beating an incumbent or by winning an open seat), some were a "Hold" by the same party but with a different senator, two were an "Appointee elected" to finish a term and the remainder, (without a note) were not up for election this year.

After these elections, Democrats had 45 seats, independents had 2, and Republicans had 53.

D1	D2	D3	D4	D5	D6	D7	D8	D9	D10
D20	D19	D18	D17	D16	D15	D14	D13	D12	D11
D21	D22	D23	D24	D25 Calif. Re-elected	D26 Conn. Re-elected	D27 Del. Re-elected	D28 Hawaii Re-elected	D29 Md. Re-elected	D30 Mass. Re-elected
D40 Va. Re-elected	D39 R.I. Re-elected	D38 Pa. Re-elected	D37 Ohio Re-elected	D36 N.Y. Re-elected	D35 N.M. Re-elected	D34 N.J. Re-elected	D33 Mont. Re-elected	D32 Minn. Re-elected	D31 Mich. Re-elected
D41 Wash. Re-elected	D42 W.Va. Re-elected	D43 Wis. Re-elected	D44 Ariz. Gain	D45 Nev. Gain	Template:Party shading/Independent (US)/active | I1 Maine Re-elected	Template:Party shading/Independent (US)/active | I2 Vt. Re-elected	R53 N.D. Gain	R52 Mo. Gain	R51 Ind. Gain
Majority →
R41	R42	R43	R44 Miss. Re-elected	R45 Neb. Re-elected	R46 Tex. Re-elected	R47 Wyo. Re-elected	R48 Tenn. Hold	R49 Utah Hold	R50 Fla. Gain
R40	R39	R38	R37	R36	R35	R34	R33	R32	R31
R21	R22	R23	R24	R25	R26	R27	R28	R29	R30
R20	R19	R18	R17	R16	R15	R14	R13	R12	R11
R1	R2	R3	R4	R5	R6	R7	R8	R9	R10

After the special elections

D1	D2	D3	D4	D5	D6	D7	D8	D9	D10
D20	D19	D18	D17	D16	D15	D14	D13	D12	D11
D21	D22	D23	D24 Minn. Appointee elected	D25	D26	D27	D28	D29	D30
D40	D39	D38	D37	D36	D35	D34	D33	D32	D31
D41	D42	D43	D44	D45	I1	I2	R53	R52	R51
Majority →
R41	R42	R43 Miss. Appointee elected	R44	R45	R46	R47	R48	R49	R50
R40	R39	R38	R37	R36	R35	R34	R33	R32	R31
R21	R22	R23	R24	R25	R26	R27	R28	R29	R30
R20	R19	R18	R17	R16	R15	R14	R13	R12	R11
R1	R2	R3	R4	R5	R6	R7	R8	R9	R10

Key:	D# Democratic R# Republican I# Independent, caucusing with Democrats

Final pre-election predictions

Most election predictors used:

• "Tossup": no advantage
• "Tilt" (used sometimes): advantage that is not quite as strong as "lean"
• "Lean": slight advantage
• "Likely" or "favored": significant, but surmountable advantage (highest ranking given from Fox News)
• "Safe" or "solid": near-certain chance of victory

State	PVI	Incumbent	Most recent result	Cook Oct 26, 2018	I.E. Nov 1, 2018	Sabato Nov 5, 2018	NYT Nov 5, 2018	CNN Nov 2, 2018	RCP Nov 5, 2018	Fox News Nov 5, 2018	Daily Kos Nov 5, 2018	Politico Nov 5, 2018	538 Nov 6, 2018	Result
Arizona	R+5	Jeff Flake (R) (retiring)	49% R	Tossup	Tilt D (flip)	Lean D (flip)	Tossup	Tossup	Tossup	Tossup	Tossup	Tossup	Lean D (flip)	50.0% D (flip)
California	D+12	Dianne Feinstein (D)	63% D	Safe D	Safe D	Safe D	Safe D	Safe D	Safe D	Likely D	Safe D	Safe D	Safe D	53.8% D
Connecticut	D+6	Chris Murphy (D)	55% D	Safe D	Safe D	Safe D	Safe D	Safe D	Safe D	Likely D	Safe D	Safe D	Safe D	58.4% D
Delaware	D+6	Tom Carper (D)	66% D	Safe D	Safe D	Safe D	Safe D	Safe D	Safe D	Likely D	Safe D	Safe D	Safe D	60.0% D
Florida	R+2	Bill Nelson (D)	55% D	Tossup	Tilt D	Lean D	Tossup	Tossup	Tossup	Tossup	Tossup	Tossup	Lean D	50.1% R (flip)
Hawaii	D+18	Mazie Hirono (D)	63% D	Safe D	Safe D	Safe D	Safe D	Safe D	Safe D	Likely D	Safe D	Safe D	Safe D	72.7% D
Indiana	R+9	Joe Donnelly (D)	50% D	Tossup	Tossup	Lean R (flip)	Tossup	Tossup	Tossup	Tossup	Tossup	Tossup	Lean D	52.9% R (flip)
Maine	D+3	Angus King (I)	53% I	Safe D/I	Safe D/I	Safe D/I	Safe D/I	Safe D/I	Safe D/I	Likely D/I	Safe D/I	Safe D/I	Safe D/I	54.2% I
Maryland	D+12	Ben Cardin (D)	55% D	Safe D	Safe D	Safe D	Safe D	Safe D	Safe D	Likely D	Safe D	Safe D	Safe D	64.2% D
Massachusetts	D+12	Elizabeth Warren (D)	54% D	Safe D	Safe D	Safe D	Safe D	Safe D	Safe D	Likely D	Safe D	Safe D	Safe D	60.5% D
Michigan	D+1	Debbie Stabenow (D)	59% D	Likely D	Safe D	Safe D	Likely D	Likely D	Lean D	Likely D	Safe D	Likely D	Safe D	52.2% D
Minnesota	D+1	Amy Klobuchar (D)	65% D	Safe D	Safe D	Safe D	Safe D	Safe D	Safe D	Likely D	Safe D	Safe D	Safe D	60.9% D
Minnesota (Special)	D+1	Tina Smith (D)	53% D	Lean D	Likely D	Likely D	Lean D	Likely D	Lean D	Likely D	Likely D	Likely D	Likely D	53.6% D
Mississippi	R+9	Roger Wicker (R)	57% R	Safe R	Safe R	Safe R	Safe R	Safe R	Safe R	Likely R	Safe R	Safe R	Safe R	58.9% R
Mississippi (Special)	R+9	Cindy Hyde-Smith (R)	60% R	Lean R	Safe R	Likely R	Lean R	Safe R	Likely R	Lean R	Likely R	Likely R	Lean R	53.6% R
Missouri	R+9	Claire McCaskill (D)	55% D	Tossup	Tilt R (flip)	Lean R (flip)	Tossup	Tossup	Tossup	Tossup	Tossup	Tossup	Tossup	51.9% R (flip)
Montana	R+11	Jon Tester (D)	49% D	Tossup	Tilt D	Lean D	Tossup	Lean D	Tossup	Lean D	Tossup	Lean D	Likely D	50.3% D
Nebraska	R+14	Deb Fischer (R)	56% R	Safe R	Safe R	Safe R	Safe R	Safe R	Safe R	Likely R	Safe R	Safe R	Safe R	58.0% R
Nevada	D+1	Dean Heller (R)	46% R	Tossup	Tilt D (flip)	Lean D (flip)	Tossup	Tossup	Tossup	Tossup	Tossup	Tossup	Tossup	51.5% D (flip)
New Jersey	D+7	Bob Menendez (D)	59% D	Tossup	Likely D	Likely D	Tossup	Lean D	Lean D	Lean D	Lean D	Lean D	Likely D	53.1% D
New Mexico	D+3	Martin Heinrich (D)	51% D	Safe D	Safe D	Safe D	Safe D	Safe D	Safe D	Likely D	Safe D	Safe D	Safe D	53.7% D
New York	D+11	Kirsten Gillibrand (D)	72% D	Safe D	Safe D	Safe D	Safe D	Safe D	Safe D	Likely D	Safe D	Safe D	Safe D	67.0% D
North Dakota	R+16	Heidi Heitkamp (D)	50% D	Lean R (flip)	Lean R (flip)	Lean R (flip)	Lean R (flip)	Lean R (flip)	Lean R (flip)	Likely R (flip)	Lean R (flip)	Lean R (flip)	Lean R (flip)	55.4% R (flip)
Ohio	R+3	Sherrod Brown (D)	51% D	Likely D	Safe D	Likely D	Likely D	Likely D	Lean D	Likely D	Likely D	Likely D	Safe D	53.2% D
Pennsylvania	EVEN	Bob Casey Jr. (D)	54% D	Likely D	Safe D	Safe D	Likely D	Likely D	Likely D	Likely D	Safe D	Likely D	Safe D	55.6% D
Rhode Island	D+10	Sheldon Whitehouse (D)	64% D	Safe D	Safe D	Safe D	Safe D	Safe D	Safe D	Likely D	Safe D	Safe D	Safe D	61.5% D
Tennessee	R+14	Bob Corker (R) (retiring)	65% R	Tossup	Lean R	Lean R	Tossup	Tossup	Tossup	Lean R	Lean R	Lean R	Likely R	54.4% R
Texas	R+8	Ted Cruz (R)	57% R	Tossup	Likely R	Lean R	Tossup	Lean R	Lean R	Lean R	Lean R	Lean R	Likely R	50.9% R
Utah	R+20	Orrin Hatch (R) (retiring)	65% R	Safe R	Safe R	Safe R	Safe R	Safe R	Safe R	Likely R	Safe R	Safe R	Safe R	62.5% R
Vermont	D+15	Bernie Sanders (I)	71% I	Safe D/I	Safe D/I	Safe D/I	Safe D/I	Safe D/I	Safe D/I	Likely D/I	Safe D/I	Safe D/I	Safe D/I	67.4% I
Virginia	D+1	Tim Kaine (D)	53% D	Safe D	Safe D	Safe D	Safe D	Safe D	Safe D	Likely D	Safe D	Safe D	Safe D	56.9% D
Washington	D+7	Maria Cantwell (D)	61% D	Safe D	Safe D	Safe D	Safe D	Safe D	Safe D	Likely D	Safe D	Safe D	Safe D	58.6% D
West Virginia	R+20	Joe Manchin (D)	61% D	Lean D	Tilt D	Lean D	Lean D	Lean D	Tossup	Lean D	Lean D	Lean D	Likely D	49.5% D
Wisconsin	EVEN	Tammy Baldwin (D)	51% D	Likely D	Safe D	Likely D	Likely D	Likely D	Lean D	Likely D	Likely D	Likely D	Safe D	54.9% D
Wyoming	R+25	John Barrasso (R)	76% R	Safe R	Safe R	Safe R	Safe R	Safe R	Safe R	Likely R	Safe R	Safe R	Safe R	67.1% R

Election dates

These are the election dates for the regularly scheduled general elections. Shading is added for future events.

State	Filing deadline	Primary election	Primary run-off (if necessary)	General election	Poll closing (Eastern Time)
Arizona	May 30, 2018	August 28, 2018	N/A	November 6, 2018	9pm
California	March 9, 2018	June 5, 2018	N/A	November 6, 2018	11pm
Connecticut	June 12, 2018	August 14, 2018	N/A	November 6, 2018	8pm
Delaware	July 10, 2018	September 6, 2018	N/A	November 6, 2018	8pm
Florida	May 4, 2018	August 28, 2018	N/A	November 6, 2018	7pm and 8pm
Hawaii	June 5, 2018	August 11, 2018	N/A	November 6, 2018	11pm
Indiana	February 9, 2018	May 8, 2018	N/A	November 6, 2018	6pm and 7pm
Maine	March 15, 2018	June 12, 2018	N/A	November 6, 2018	8pm
Maryland	February 27, 2018	June 26, 2018	N/A	November 6, 2018	8pm
Massachusetts	June 5, 2018	September 4, 2018	N/A	November 6, 2018	8pm
Michigan	April 24, 2018	August 7, 2018	N/A	November 6, 2018	8pm and 9pm
Minnesota	June 5, 2018	August 14, 2018	N/A	November 6, 2018	9pm
Mississippi	March 1, 2018	June 5, 2018	June 26, 2018	November 6, 2018	8pm
Mississippi (Special)	March 26, 2018	November 6, 2018	N/A	November 27, 2018	8pm
Missouri	March 27, 2018	August 7, 2018	N/A	November 6, 2018	8pm
Montana	March 12, 2018	June 5, 2018	N/A	November 6, 2018	10pm
Nebraska	March 1, 2018	May 15, 2018	N/A	November 6, 2018	9pm
Nevada	March 16, 2018	June 12, 2018	N/A	November 6, 2018	10pm
New Jersey	April 2, 2018	June 5, 2018	N/A	November 6, 2018	8pm
New Mexico	March 13, 2018	June 5, 2018	N/A	November 6, 2018	9pm
New York	April 12, 2018	June 26, 2018	N/A	November 6, 2018	9pm
North Dakota	April 9, 2018	June 12, 2018	N/A	November 6, 2018	8pm and 9pm
Ohio	February 7, 2018	May 8, 2018	N/A	November 6, 2018	7:30pm
Pennsylvania	March 20, 2018	May 15, 2018	N/A	November 6, 2018	8pm
Rhode Island	June 27, 2018	September 12, 2018	N/A	November 6, 2018	8pm
Tennessee	April 5, 2018	August 2, 2018	N/A	November 6, 2018	8pm
Texas	December 11, 2017	March 6, 2018	May 22, 2018 (unnecessary)	November 6, 2018	8pm and 9pm
Utah	March 15, 2018	June 26, 2018	N/A	November 6, 2018	10pm
Vermont	May 31, 2018	August 14, 2018	N/A	November 6, 2018	7pm
Virginia	March 29, 2018	June 12, 2018	N/A	November 6, 2018	7pm
Washington	May 18, 2018	August 7, 2018	N/A	November 6, 2018	11pm
West Virginia	January 27, 2018	May 8, 2018	N/A	November 6, 2018	7:30pm
Wisconsin	June 1, 2018	August 14, 2018	N/A	November 6, 2018	9pm
Wyoming	June 1, 2018	August 21, 2018	N/A	November 6, 2018	9pm

Race summary

Special elections during the preceding Congress

In these special elections, the winners will be seated before January 3, 2019, when elected and qualified. They are ordered by election date, then by state and by class.

State (linked to summaries below)	Incumbent			Results	Candidates
	Senator	Party	Electoral history
Minnesota (Class 2)	Tina Smith	Democratic	2018 (Appointed)	Interim appointee elected.	Y Tina Smith (Democratic) 53.0% Karin Housley (Republican) 42.4% Sarah Wellington (Legal Marijuana Now) 3.7% Jerry Trooien (independent) 0.9%
Mississippi (Class 2)	Cindy Hyde-Smith	Republican	2018 (Appointed)	Interim appointee elected.	Y Cindy Hyde-Smith (Republican) 53.6% Mike Espy (Democratic) 46.4%

Elections leading to the next Congress

In these general elections, the winners were elected for the term beginning January 3, 2019.

All of the elections involve the Class 1 seats and they are ordered by state.

State (linked to summaries below)	Incumbent			Results	Candidates
	Senator	Party	Electoral history
Arizona	Jeff Flake	Republican	2012	Incumbent retired. New senator elected. Democratic gain.	Y Kyrsten Sinema (Democratic) 50.0% Martha McSally (Republican) 47.6% Angela Green (Green) 2.4%
California	Dianne Feinstein	Democratic	1992 (Special) 1994 2000 2006 2012	Incumbent re-elected.	Y Dianne Feinstein (Democratic) 54.2% Kevin de León (Democratic) 45.8%
Connecticut	Chris Murphy	Democratic	2012	Incumbent re-elected.	Y Chris Murphy (Democratic) 59.5% Matthew Corey (Republican) 39.4% Richard Lion (Libertarian) 0.6% Jeff Russell (Green) 0.5%
Delaware	Tom Carper	Democratic	2000 2006 2012	Incumbent re-elected.	Y Tom Carper (Democratic) 60.0% Robert Arlett (Republican) 37.8% Demitri Theodoropoulos (Green) 1.2% Nadine Frost (Libertarian) 1.1%
Florida	Bill Nelson	Democratic	2000 2006 2012	Incumbent lost re-election. New senator elected. Republican gain.	Y Rick Scott (Republican) 50.1% Bill Nelson (Democratic) 49.9%
Hawaii	Mazie Hirono	Democratic	2012	Incumbent re-elected.	Y Mazie Hirono (Democratic) 71.2% Ron Curtis (Republican) 28.8%
Indiana	Joe Donnelly	Democratic	2012	Incumbent lost re-election. New senator elected. Republican gain.	Y Mike Braun (Republican) 50.9% Joe Donnelly (Democratic) 45.0% Lucy Brenton (Libertarian) 4.0%
Maine	Angus King	Independent	2012	Incumbent re-elected.	Y Angus King (Independent) 54.3% Eric Brakey (Republican) 35.2% Zak Ringelstein (Democratic) 10.4%
Maryland	Ben Cardin	Democratic	2006 2012	Incumbent re-elected.	Y Ben Cardin (Democratic) 64.9% Tony Campbell (Republican) 30.3% Neal Simon (Independent) 3.7% Arvin Vohra (Libertarian) 1% Michael Puskar (Independent) (write-in)
Massachusetts	Elizabeth Warren	Democratic	2012	Incumbent re-elected.	Y Elizabeth Warren (Democratic) 60.4% Geoff Diehl (Republican) 36.2% Shiva Ayyadurai (Independent) 3.4%
Michigan	Debbie Stabenow	Democratic	2000 2006 2012	Incumbent re-elected.	Y Debbie Stabenow (Democratic) 52.3% John James (Republican) 45.8% Marcia Squier (Independent) 1% George Huffman III (Taxpayers) 0.6 John Wilhelm (Natural Law) 0.4%
Minnesota	Amy Klobuchar	Democratic	2006 2012	Incumbent re-elected.	Y Amy Klobuchar (Democratic) 60.3% Jim Newberger (Republican) 36.2% Dennis Schuller (Legal Marijuana Now) 2.5% Paula M. Overby (Green) 0.9%
Mississippi	Roger Wicker	Republican	2007 (Appointed) 2008 (Special) 2012	Incumbent re-elected.	Y Roger Wicker (Republican) 58.5% David Baria (Democratic) 39.5% Danny Bedwell (Libertarian) 1.4% Shawn O'Hara (Reform) 0.6%
Missouri	Claire McCaskill	Democratic	2006 2012	Incumbent lost re-election. New senator elected. Republican gain.	Y Josh Hawley (Republican) 51.4% Claire McCaskill (Democratic) 45.6% Craig O'Dear (independent) 1.4% Japheth Campbell (Libertarian) 1.1% Jo Crain (Green) 0.5%
Montana	Jon Tester	Democratic	2006 2012	Incumbent re-elected.	Y Jon Tester (Democratic) 50.3% Matthew Rosendale (Republican) 46.8% Rick Breckenridge (Libertarian) 2.9%
Nebraska	Deb Fischer	Republican	2012	Incumbent re-elected.	Y Deb Fischer (Republican) 57.7% Jane Raybould (Democratic) 38.6% Jim Schultz (Libertarian) 3.7%
Nevada	Dean Heller	Republican	2011 (Appointed) 2012	Incumbent lost re-election. New senator elected. Democratic gain.	Y Jacky Rosen (Democratic) 50.4% Dean Heller (Republican) 45.4% None of these candidates 1.6% Barry Michaels (independent) 1% Tim Hagan (Libertarian) 0.9% Kamau Bakari (Independent American) 0.7%
New Jersey	Bob Menendez	Democratic	2006 (Appointed) 2006 2012	Incumbent re-elected.	Y Bob Menendez (Democratic) 54.0% Bob Hugin (Republican) 42.8% Madelyn Hoffman (Green) 0.8% Murray Sabrin (Libertarian) 0.7% Natalie Rivera (For The People) 0.6% Tricia Flanagan (New Day NJ) 0.5% Kevin Kimple (Make It Simple) 0.3% Hank Schroeder (Economic Growth) 0.3%
New Mexico	Martin Heinrich	Democratic	2012	Incumbent re-elected.	Y Martin Heinrich (Democratic) 54.1% Mick Rich (Republican) 30.5% Gary Johnson (Libertarian) 15.4%
New York	Kirsten Gillibrand	Democratic	2009 (Appointed) 2010 (Special) 2012	Incumbent re-elected.	Y Kirsten Gillibrand (Democratic) 67.0% Chele Chiavacci Farley (Republican) 33.0%
North Dakota	Heidi Heitkamp	Democratic	2012	Incumbent lost re-election. New senator elected. Republican gain.	Y Kevin Cramer (Republican) 55.5% Heidi Heitkamp (Democratic) 44.5%
Ohio	Sherrod Brown	Democratic	2006 2012	Incumbent re-elected.	Y Sherrod Brown (Democratic) 53.4% Jim Renacci (Republican) 46.6%
Pennsylvania	Bob Casey Jr.	Democratic	2006 2012	Incumbent re-elected.	Y Bob Casey Jr. (Democratic) 55.7% Lou Barletta (Republican) 42.6% Dale Kerns (Libertarian) 1% Neal Gale (Green) 0.6%
Rhode Island	Sheldon Whitehouse	Democratic	2006 2012	Incumbent re-elected.	Y Sheldon Whitehouse (Democratic) 61.6% Robert Flanders (Republican) 38.4%
Tennessee	Bob Corker	Republican	2006 2012	Incumbent retired. New senator elected. Republican hold.	Y Marsha Blackburn (Republican) 54.7% Phil Bredesen (Democratic) 43.9% Trudy Austin (independent) 0.4% Dean Hill (independent) 0.4% Kris Todd (independent) 0.2% John Carico (independent) 0.2% Breton Phillips (independent) 0.1% Kevin McCants (independent) 0.1%
Texas	Ted Cruz	Republican	2012	Incumbent re-elected.	Y Ted Cruz (Republican) 50.9% Beto O'Rourke (Democratic) 48.3% Neal Dikeman (Libertarian) 0.8%
Utah	Orrin Hatch	Republican	1976 1982 1988 1994 2000 2006 2012	Incumbent retired. New senator elected. Republican hold.	Y Mitt Romney (Republican) 62.6% Jenny Wilson (Democratic) 30.9% Tim Aalders (Constitution) 2.7% Craig Bowden (Libertarian) 2.6% Reed McCandless (Independent American) 1.2%
Vermont	Bernie Sanders	Independent	2006 2012	Incumbent re-elected.	Y Bernie Sanders (Independent) 67.4% Lawrence Zupan (Republican) 27.5%
Virginia	Tim Kaine	Democratic	2012	Incumbent re-elected.	Y Tim Kaine (Democratic) 57.1% Corey Stewart (Republican) 41.1% Matt Waters (Libertarian) 1.8%
Washington	Maria Cantwell	Democratic	2000 2006 2012	Incumbent re-elected.	Y Maria Cantwell (Democratic) 58.4% Susan Hutchison (Republican) 41.6%
West Virginia	Joe Manchin	Democratic	2010 (Special) 2012	Incumbent re-elected.	Y Joe Manchin (Democratic) 49.6% Patrick Morrisey (Republican) 46.3% Rusty Hollen (Libertarian) 4.1%
Wisconsin	Tammy Baldwin	Democratic	2012	Incumbent re-elected.	Y Tammy Baldwin (Democratic) 55.4% Leah Vukmir (Republican) 44.6%
Wyoming	John Barrasso	Republican	2007 (Appointed) 2008 (Special) 2012	Incumbent re-elected.	Y John Barrasso (Republican) 67.1% Gary Trauner (Democratic) 30.1% Joe Porambo (Libertarian) 2.8%

Closest races

In twelve races the margin of victory was under 10%.

District	Winner	Margin
Florida	Republican (flip)	0.12%
Arizona	Democratic (flip)	2.34%
Texas	Republican	2.57%
West Virginia	Democratic	3.31%
Montana	Democratic	3.55%
Nevada	Democratic (flip)	5.03%
Missouri	Republican (flip)	5.81%
Indiana	Republican (flip)	5.89%
Michigan	Democratic	6.51%
Ohio	Democratic	6.85%
Mississippi (Special)	Republican	7.27%
California	Democratic	8.33%

Arizona

Arizona election

Turnout	64.85%
125x136px 125x136px Nominee Kyrsten Sinema Martha McSally Party Democratic Republican Popular vote 1,191,100 1,135,200 Percentage 50.00% 47.61%
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U.S. senator before election Jeff Flake Republican Elected U.S. senator Kyrsten Sinema Democratic

Main article: 2018 United States Senate election in Arizona

See also: List of United States senators from Arizona

One-term Republican Jeff Flake was elected with 49% of the vote in 2012. He chose not to run for reelection.

U.S. Representative Martha McSally won the Republican nomination in a three-way primary on August 28, 2018, against Joe Arpaio and Kelli Ward.

U.S. Representative Kyrsten Sinema easily secured the Democratic nomination.

Sinema defeated McSally by a slim margin; her victory became official only after six days of counting ballots.

California

California election

Turnout	56.42%
125x136px Nominee Dianne Feinstein Kevin de León Party Democratic Democratic Popular vote 6,019,422 5,093,942 Percentage 54.16% 45.84%
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U.S. senator before election Dianne Feinstein Democratic Elected U.S. senator Dianne Feinstein Democratic

Main article: 2018 United States Senate election in California

See also: List of United States senators from California

Four-term Democrat Dianne Feinstein won a special election in 1992 and was elected to full terms in 1994, 2000, 2006, and 2012. She ran for re-election and advanced to the general election after securing the top spot in the June 5 jungle primary.

The June 5 primary ballot listed 32 candidates (Feinstein plus 31 challengers) in addition to 3 write-in candidates. There were 10 Democratic candidates, 11 Republican candidates, one Libertarian, one Peace and Freedom candidate, and 9 independent candidates. There was also a Green Party candidate who ran as a write-in.

President pro tempore of the California State Senate Kevin de León advanced to the general election for the right to challenge Feinstein after securing the second spot in the primary.

The 11 Republican candidates who ran in the primary combined for 33.2% of the vote. The top Republican candidate, James P. Bradley, received 8.3% of the vote, which put him in 3rd place at 3.8% behind the second-place finisher, Kevin DeLeon.

On November 6, Dianne Feinstein was elected to a fifth term, defeating Kevin de León.

Connecticut

Connecticut election

Turnout	63.58%
125x136px Nominee Chris Murphy Matthew Corey Party Democratic Republican Popular vote 825,579 545,714 Percentage 59.53% 39.35%
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U.S. senator before election Chris Murphy Democratic Elected U.S. senator Chris Murphy Democratic

Main article: 2018 United States Senate election in Connecticut

See also: List of United States senators from Connecticut

One-term Democrat Chris Murphy was elected with 55% of the vote in 2012. He ran for re-election.

Businessmen Matthew Corey received the Republican nomination.

Chris Murphy was elected to a second term, winning nearly 60% of the vote.

Delaware

Delaware election

Turnout	52.18%
125x136px 125x136px Nominee Tom Carper Rob Arlett Party Democratic Republican Popular vote 217,385 137,127 Percentage 59.95% 37.81%
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U.S. senator before election Tom Carper Democratic Elected U.S. senator Tom Carper Democratic

Main article: 2018 United States Senate election in Delaware

See also: List of United States senators from Delaware

Three-term Democrat Tom Carper won re-election with 66% of the vote in 2012. He announced he was running for re-election during an interview on MSNBC on July 24, 2017. He defeated Dover community activist Kerri Evelyn Harris for the Democratic nomination. Sussex County Councilman Robert Arlett won the Republican nomination.

Tom Carper defeated Arlett, winning 60% of the vote.

Florida

Florida election

Turnout	61.68%
Nominee Rick Scott Bill Nelson Party Republican Democratic Popular vote 4,099,505 4,089,472 Percentage 50.06% 49.94%
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U.S. senator before election Bill Nelson Democratic Elected U.S. senator Rick Scott Republican

Main article: 2018 United States Senate election in Florida

See also: List of United States senators from Florida

Three-term Democrat Bill Nelson was re-elected with 55% of the vote in 2012. He sought re-election to a fourth term in office.

Florida Governor Rick Scott won the Republican nomination. First elected in 2010 and re-elected in 2014, Scott's term as Governor of Florida is set to end by January 2019, due to term limits.

Edward Janowski was running as an independent, but did not qualify.

Scott led among ballots tallied on election night, but given the close margins of the race recounts were ordered. Final recount numbers were released following a machine and hand recount with Rick Scott maintaining a lead. On November 18, Nelson conceded to Scott. Two days later, election results were certified by the state, cementing Scott's win.

Hawaii

Hawaii election

Turnout	51.32%
125x136px 125x136px Nominee Mazie Hirono Ron Curtis Party Democratic Republican Popular vote 276,316 112,035 Percentage 71.15% 28.85%
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U.S. senator before election Mazie Hirono Democratic Elected U.S. senator Mazie Hirono Democratic

Main article: 2018 United States Senate election in Hawaii

See also: List of United States senators from Hawaii

One-term Democrat Mazie Hirono was elected with 63% of the vote in 2012. She ran.

Ron Curtis was the Republican nominee.

Hirono was elected to a second term by a landslide.

Indiana

Indiana election

Turnout	50.42%
125x136px 125x136px Nominee Mike Braun Joe Donnelly Party Republican Democratic Popular vote 1,158,000 1,023,553 Percentage 50.73% 44.84%
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U.S. senator before election Joe Donnelly Democratic Elected U.S. senator Mike Braun Republican

Main article: 2018 United States Senate election in Indiana

See also: List of United States senators from Indiana

One-term Democrat Joe Donnelly was elected with 50.04% of the vote in 2012. He ran. He won the Democratic primary unopposed.

State Representative Mike Braun won the May 8 Republican primary. U.S. Representatives Luke Messer and Todd Rokita also ran for the Republican nomination.

James Johnson ran as an independent.

Braun won election with 51% of the vote, defeating Joe Donnelly.

Maine

Maine election

Turnout	59.96%
125x136px 125x136px Nominee Angus King Eric Brakey Zak Ringelstein Party Independent Republican Democratic Popular vote 344,575 223,502 64,268 Percentage 54.31% 35.23% 10.45%
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U.S. senator before election Angus King Independent Elected U.S. senator Angus King Independent

Main article: 2018 United States Senate election in Maine

See also: List of United States senators from Maine

One-term Independent Senator Angus King was elected in a three-way race with 53% of the vote in 2012. King has caucused with the Democratic Party since taking office in 2013, but he has left open the possibility of caucusing with the Republican Party in the future.

King ran.

State Senator Eric Brakey ran unopposed for the Republican nomination.

Public school teacher and founder of UClass Zak Ringelstein ran unopposed for the Democratic nomination.

The election was conducted with ranked choice voting, as opposed to "First-past-the-post voting", after Maine voters passed a citizen referendum approving the change in 2016 and a June 2018 referendum sustaining the change.

King was easily re-elected with over 50% of the vote.

Maryland

Maryland election

Turnout	58.17%
125x136px 125x136px Nominee Ben Cardin Tony Campbell Party Democratic Republican Popular vote 1,491,614 697,107 Percentage 64.86% 30.31%
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U.S. senator before election Ben Cardin Democratic Elected U.S. senator Ben Cardin Democratic

Main article: 2018 United States Senate election in Maryland

See also: List of United States senators from Maryland

Two-term Democrat Ben Cardin was re-elected with 56% of the vote in 2012. He won the Democratic primary.

Tony Campbell, Evan Cronhardt, Nnabu Eze, Gerald Smith, and Blaine Taylor were seeking the Republican nomination, with Campbell winning.

Arvin Vohra, vice chairman of the Libertarian National Committee, sought the Libertarian Party nomination.

Independents Neal Simon and Edward Shlikas, and Michael B Puskar ran.

Cardin won re-election to a third term in office.

Massachusetts

Massachusetts election

Turnout	59.17%
125x136px 125x136px Nominee Elizabeth Warren Geoff Diehl Party Democratic Republican Popular vote 1,633,371 979,210 Percentage 60.34% 36.17%
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U.S. senator before election Elizabeth Warren Democratic Elected U.S. senator Elizabeth Warren Democratic

Main article: 2018 United States Senate election in Massachusetts

See also: List of United States senators from Massachusetts

One-term Democrat Elizabeth Warren was elected with 54% of the vote in 2012. She ran for re-election.

State Representative Geoff Diehl, attorney and founder of Better for America, John Kingston and former Romney aide Beth Lindstrom, ran for the Republican nomination. Diehl won the Republican nomination.

Shiva Ayyadurai ran as an independent. Shiva started as in early 2017 as the first Republican in the race, but went independent in November 2017.

Warren defeated Diehl, winning a second term.

Michigan

Michigan election

Turnout	56.72%
125x136px 125x136px Nominee Debbie Stabenow John James Party Democratic Republican Popular vote 2,214,478 1,938,818 Percentage 52.26% 45.76%
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U.S. senator before election Debbie Stabenow Democratic Elected U.S. senator Debbie Stabenow Democratic

Main article: 2018 United States Senate election in Michigan

See also: List of United States senators from Michigan

Three-term Democrat Debbie Stabenow was re-elected with 59% of the vote in 2012. She was renominated without Democratic opposition. On the Republican side, businessman John James won the nomination.

In the final months of the election, polls showed the race was beginning to narrow. Ultimately, Stabenow was re-elected, defeating James.

Minnesota

Minnesota election

Turnout	63.89%
125x136px 125x136px Nominee Amy Klobuchar Jim Newberger Party Democratic Republican Popular vote 1,566,174 940,437 Percentage 60.31% 36.21%
File:MNSenate18.svg
U.S. senator before election Amy Klobuchar Democratic Elected U.S. senator Amy Klobuchar Democratic

Main article: 2018 United States Senate election in Minnesota

See also: List of United States senators from Minnesota and 2018 United States Senate special election in Minnesota

Two-term Democrat Amy Klobuchar was re-elected with 65% of the vote in 2012. She ran for re-election.

State Representative Jim Newberger ran for the Republican nomination.

Klobuchar was easily re-elected.

Minnesota (Special)

Minnesota special election

Turnout	63.66%
125x136px 125x136px Nominee Tina Smith Karin Housley Party Democratic Republican Popular vote 1,370,540 1,095,777 Percentage 52.97% 42.35%
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U.S. senator before election Tina Smith Democratic Elected U.S. senator Tina Smith Democratic

Main article: 2018 United States Senate special election in Minnesota

See also: List of United States senators from Minnesota and 2018 United States Senate election in Minnesota

Two-term Democrat Al Franken announced that he would resign in December 2017, following allegations of sexual harassment. Mark Dayton, Governor of Minnesota, appointed Lt. Gov. Tina Smith on January 2, 2018, as an interim Senator until the November 2018 election. She defeated primary challenger Richard Painter in the Democratic primary held on August 14.

Incumbent Tina Smith defeated Republican Karin Housley in the general election to finish the term ending January 3, 2021.

Mississippi

Mississippi election

Turnout	49.66%
125x136px Nominee Roger Wicker David Baria Party Republican Democratic Popular vote 547,619 369,567 Percentage 58.49% 39.47%
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U.S. senator before election Roger Wicker Republican Elected U.S. senator Roger Wicker Republican

Main article: 2018 United States Senate election in Mississippi

See also: List of United States senators from Mississippi and 2018 United States Senate special election in Mississippi

One-term Republican Roger Wicker won re-election with 57% of the vote in 2012. He was appointed in 2007 and won a special election in 2008 to serve the remainder of Trent Lott's term. He ran.

David Baria won the Democratic nomination in a run-off on June 26.

Wicker was easily re-elected.

Mississippi (Special)

Mississippi special election

November 6, 2018 (general) / November 27, 2018 (runoff)
Turnout	50.15% (general) / 48.14% (runoff)
125x136px 125x136px Nominee Cindy Hyde-Smith Mike Espy Party Republican Democratic Popular vote 389,995 (general) / 486,769 (runoff) 386,742 (general) / 420,819 (runoff) Percentage 41.25% (general) / 53.63% (runoff) 40.90% (general) / 46.37% (runoff)
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U.S. senator before election Cindy Hyde-Smith Republican Elected U.S. senator Cindy Hyde-Smith Republican

Main article: 2018 United States Senate special election in Mississippi

See also: List of United States senators from Mississippi and 2018 United States Senate election in Mississippi

Seven-term Republican Thad Cochran, who won re-election with 59.9% of the vote in 2014, announced that he would resign since April 1, 2018 due to health reasons. Phil Bryant, Governor of Mississippi, announced on March 21, 2018, that he would appoint Mississippi Agriculture Commissioner Cindy Hyde-Smith to fill the vacancy. She ran in the special election.

On November 6, a nonpartisan jungle primary took place on the same day as the regularly scheduled U.S. Senate election for the seat currently held by Roger Wicker. Party affiliations were not printed on the ballot. As no candidate gained 50% of the votes, a runoff special election between the top two candidates - Hyde-Smith and former United States Secretary of Agriculture Mike Espy - was held on November 27, 2018. Hyde-Smith won the runoff election.

Democrat Tobey Bartee and Republican Chris McDaniel also contested the first round of the election.

Missouri

Missouri election

Turnout	58.23%
125x136px 125x136px Nominee Josh Hawley Claire McCaskill Party Republican Democratic Popular vote 1,254,927 1,112,935 Percentage 51.38% 45.57%
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U.S. senator before election Claire McCaskill Democratic Elected U.S. senator Josh Hawley Republican

Main article: 2018 United States Senate election in Missouri

See also: List of United States senators from Missouri

Two-term Democrat Claire McCaskill was re-elected with 55% of the vote in 2012. She was renominated.

Attorney General Josh Hawley won the Republican nomination. Japheth Campbell has declared his candidacy for the Libertarian nomination.

Polls showed a close race for months leading up to the election. Hawley defeated McCaskill in the general election.

Montana

Montana election

Turnout	70.86%
125x136px 125x136px Nominee Jon Tester Matt Rosendale Party Democratic Republican Popular vote 253,876 235,963 Percentage 50.33% 46.78%
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U.S. senator before election Jon Tester Democratic Elected U.S. senator Jon Tester Democratic

Main article: 2018 United States Senate election in Montana

See also: List of United States senators from Montana

Two-term Democrat Jon Tester was re-elected with 49% of the vote in 2012. He won the Democratic nomination in the June 5 primary with no opposition.

State Auditor Matthew Rosendale won the Republican nomination in the June 5 primary. State Senator Albert Olszewski, former judge Russell Fagg, and Troy Downing also ran for the Republican nomination.

Tester was re-elected winning over 50% of the vote.

Nebraska

Nebraska election

Turnout	57.32%
125x136px 125x136px Nominee Deb Fischer Jane Raybould Party Republican Democratic Popular vote 403,151 269,917 Percentage 57.69% 38.62%
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U.S. senator before election Deb Fischer Republican Elected U.S. senator Deb Fischer Republican

Main article: 2018 United States Senate election in Nebraska

See also: List of United States senators from Nebraska

One-term Republican Deb Fischer was elected with 58% of the vote in 2012. She ran for and won the Republican nomination in the May 15 primary. Other Republicans who ran include retired professor Jack Heidel, Todd Watson, and Dennis Frank Macek.

Lincoln Councilwoman Jane Raybould ran for and won the Democratic nomination in the May 15 primary. Other Democrats who ran include Frank Svoboda, Chris Janicek, and Larry Marvin, who was a candidate in 2008, 2012, and 2014.

Jim Schultz ran for the Libertarian nomination.

Fischer was easily re-elected.

Nevada

Nevada election

Turnout	62.26%
125x136px 125x136px Nominee Jacky Rosen Dean Heller Party Democratic Republican Popular vote 490,071 441,202 Percentage 50.41% 45.38%
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U.S. senator before election Dean Heller Republican Elected U.S. senator Jacky Rosen Democratic

Main article: 2018 United States Senate election in Nevada

See also: List of United States senators from Nevada

Incumbent Republican Dean Heller was the Republican nominee. He was appointed to the seat in 2011 and then elected with 46% of the vote in 2012. Heller considered running for governor, but chose to seek re-election.

Nevada was the only state in the midterm elections that had an incumbent Republican Senator in a state that Hillary Clinton had won in 2016.

Representative Jacky Rosen is the Democratic nominee.

Rosen defeated Heller in the general election, making Heller the only Republican incumbent to lose re-election in 2018.

New Jersey

New Jersey election

Turnout	53.38%
125x136px 125x136px Nominee Bob Menendez Bob Hugin Party Democratic Republican Popular vote 1,711,654 1,357,355 Percentage 54.01% 42.83%
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U.S. senator before election Bob Menendez Democratic Elected U.S. senator Bob Menendez Democratic

Main article: 2018 United States Senate election in New Jersey

See also: List of United States senators from New Jersey

Republican Bob Hugin was nominated to face two-term Democrat Bob Menendez, who was re-elected with 59% of the vote in 2012. Menendez was originally appointed to the seat in January 2006. He ran for re-election, despite recent scandals that plagued his campaign.

Hugin self-funded most of his campaign. Ultimately, Menendez was re-elected with nearly 54% of the vote.

New Mexico

New Mexico election

Turnout	55.03%
125x136px 125x136px Nominee Martin Heinrich Mick Rich Gary Johnson Party Democratic Republican Libertarian Popular vote 376,998 212,813 107,201 Percentage 54.09% 30.53% 15.38%
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U.S. senator before election Martin Heinrich Democratic Elected U.S. senator Martin Heinrich Democratic

Main article: 2018 United States Senate election in New Mexico

See also: List of United States senators from New Mexico

One-term Democrat Martin Heinrich was elected with 51% of the vote in 2012. He ran. Mick Rich won the Republican nomination unopposed.

Aubrey Dunn Jr., New Mexico Commissioner of Public Lands and otherwise the first Libertarian to ever hold statewide elected office in history, announced his run for the seat, but stepped aside in August to allow former Governor of New Mexico, Gary Johnson's candidacy.

Heinrich was easily re-elected, defeating Rich and Johnson.

New York

New York election

Turnout	52.32%
Nominee Kirsten Gillibrand Chele Chiavacci Farley Party Democratic Republican Popular vote 4,056,931 1,998,220 Percentage 67.00% 33.00%
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U.S. senator before election Kirsten Gillibrand Democratic Elected U.S. senator Kirsten Gillibrand Democratic

One-term Democrat Kirsten Gillibrand was elected with 72% of the vote in 2012. She had previously been appointed to the seat in 2009 and won a special election to remain in office in 2010. She ran.

Private equity executive Chele Chiavacci Farley has been nominated for U.S. Senate by the Republican and Conservative Parties.

Gillibrand was elected to a second term.

North Dakota

North Dakota election

Turnout	56.27%
125x136px Nominee Kevin Cramer Heidi Heitkamp Party Republican Democratic Popular vote 179,720 144,376 Percentage 55.45% 44.55%
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U.S. senator before election Heidi Heitkamp Democratic Elected U.S. senator Kevin Cramer Republican

One-term Democrat Heidi Heitkamp was elected with 50% of the vote in 2012. She won the Democratic nomination unopposed.

Representative Kevin Cramer won the Republican nomination in the June 12 primary. Former Niagara, North Dakota Mayor Thomas O'Neill also ran for the Republican nomination.

Heitkamp was continuously behind in the polls leading up to the election, and ended up losing to Cramer by 11%.

Ohio

Ohio election

Turnout	54.65%
125x136px Nominee Sherrod Brown Jim Renacci Party Democratic Republican Popular vote 2,358,508 2,057,559 Percentage 53.41% 46.59%
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U.S. senator before election Sherrod Brown Democratic Elected U.S. senator Sherrod Brown Democratic

Two-term Democrat Sherrod Brown was re-elected with 51% of the vote in 2012. He ran and was unopposed in Democratic primary.

U.S. Representative Jim Renacci ran for and won the Republican nomination in the May 8 primary. Other Republicans who ran include investment banker Michael Gibbons, businesswoman Melissa Ackison, Dan Kiley, and Don Elijah Eckhart.

Brown won re-election, defeating Renacci. Brown was the only non-judicial statewide Democrat in Ohio to win in 2018.

Pennsylvania

Pennsylvania election

Turnout	58.18%
125x136px 125x136px Nominee Bob Casey Jr. Lou Barletta Party Democratic Republican Popular vote 2,792,327 2,134,848 Percentage 55.74% 42.62%
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U.S. senator before election Bob Casey Jr. Democratic Elected U.S. senator Bob Casey Jr. Democratic

Two-term Democrat Bob Casey Jr. was re-elected with 54% of the vote in 2012. He ran and won the Democratic primary unopposed.

U.S. Representative Lou Barletta ran for and won the Republican nomination in the May 15 primary. Jim Christiana also ran for the Republican nomination.

Casey was easily re-elected.

Rhode Island

Rhode Island election

Turnout	47.69%
125x136px 125x136px Nominee Sheldon Whitehouse Robert Flanders Party Democratic Republican Popular vote 231,477 144,421 Percentage 61.45% 38.33%
200px Blue: Whitehouse (D); Red: Flanders (R)
U.S. senator before election Sheldon Whitehouse Democratic Elected U.S. senator Sheldon Whitehouse Democratic

Two-term Democrat Sheldon Whitehouse was re-elected with 64% of the vote in 2012. He ran.

Former Rhode Island Supreme Court Associate Justice Robert Flanders was the Republican nominee.

Whitehouse was elected to a third term by a wide margin.

Tennessee

Tennessee election

Turnout	53.89%
125x136px 125x136px Nominee Marsha Blackburn Phil Bredesen Party Republican Democratic Popular vote 1,227,483 985,450 Percentage 54.71% 43.92%
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U.S. senator before election Bob Corker Republican Elected U.S. senator Marsha Blackburn Republican

Two-term Republican Bob Corker was re-elected with 65% of the vote in 2012. Senator Corker filed his Statement of Candidacy with the Secretary of the U.S. Senate to run for re-election, but on September 26, 2017, Senator Corker announced his intent to retire.

Aaron Pettigrew and Republican U.S. Representative Marsha Blackburn ran for the Republican nomination. Marsha Blackburn became the Republican nominee.

Former Tennessee Governor Phil Bredesen became the Democratic nominee.

Despite predictions that race would be close, Blackburn was easily elected to the Senate.

Texas

Texas election

Turnout	53.01%
125x136px 125x136px Nominee Ted Cruz Beto O'Rourke Party Republican Democratic Popular vote 4,260,553 4,045,632 Percentage 50.89% 48.33%
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U.S. senator before election Ted Cruz Republican Elected U.S. senator Ted Cruz Republican

One-term Republican Ted Cruz was elected with 57% of the vote in 2012. He overwhelmingly won the Republican primary on March 6, 2018. Television producer Bruce Jacobson, Houston energy attorney Stefano de Stefano, former mayor of La Marque Geraldine Sam, Mary Miller, and Thomas Dillingham were Cruz's opponents.

U.S. Representative Beto O'Rourke won the Democratic nomination on March 6, 2018. Other Democrats who ran include Irasema Ramirez Hernandez and Edward Kimbrough.

Nurse Carl Bible ran as an independent. Bob McNeil ran as the candidate of the American Citizen Party. Neal Dikeman was the Libertarian nominee.

O'Rouke ran a strong campaign, creating a close race in a traditionally Republican stronghold. Nevertheless, Cruz was narrowly re-elected to a second term.

Utah

Utah election

Turnout	74.15%
125x136px Nominee Mitt Romney Jenny Wilson Party Republican Democratic Popular vote 665,215 328,541 Percentage 62.59% 30.91%
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U.S. senator before election Orrin Hatch Republican Elected U.S. senator Mitt Romney Republican

Seven-term Republican Orrin Hatch was re-elected with 65% of the vote in 2012. Hatch is the President pro tempore of the United States Senate, as well as the second most-senior Senator. Before the 2012 election, Hatch said that he would retire at the end of his seventh term if he was re-elected. Hatch initially announced his re-election campaign on March 9, 2017, but later announced his plans to retire on January 2, 2018. Former 2012 Republican presidential nominee Mitt Romney was running for the seat.

Professor James Singer was running for the Democratic nomination, but he dropped out and endorsed Salt Lake County Councilwoman Jenny Wilson, who made her Senate bid official on July 17, 2017. Danny Drew also was running, but dropped out and endorsed Jenny Wilson. Mitchell Kent Vice was defeated for the Democratic nomination by Wilson.

Mitt Romney was easily elected, defeating Wilson.

Vermont

Vermont election

Turnout	55.57%
125x136px Nominee Bernie Sanders Lawrence Zupan Party Independent Republican Popular vote 183,649 74,815 Percentage 67.44% 27.47%
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U.S. senator before election Bernie Sanders Independent Elected U.S. senator Bernie Sanders Independent

Two-term Independent Senator Bernie Sanders was re-elected with 71% of the vote in 2012. Sanders, one of two independent members of Congress, has caucused with the Democratic Party since taking office in 2007. In November 2015, Sanders announced his plans to run as a Democrat, rather than an Independent, in all future elections. He won the nomination easily.

Sanders easily won election to a third term.

Virginia

Virginia election

Turnout	59.14%
125x136px 125x136px Nominee Tim Kaine Corey Stewart Party Democratic Republican Popular vote 1,910,370 1,374,313 Percentage 57.00% 41.01%
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U.S. senator before election Tim Kaine Democratic Elected U.S. senator Tim Kaine Democratic

One-term Democrat Tim Kaine was elected with 53% of the vote in 2012. He was re-nominated unopposed. Prince William County Supervisor Corey Stewart was the Republican nominee. Matt Waters was the Libertarian nominee. Kaine defeated Stewart with 57% of the vote. Stewart received about 41% of the vote.

Washington

Washington election

Turnout	70.74%
125x136px 125x136px Nominee Maria Cantwell Susan Hutchison Party Democratic Republican Popular vote 1,803,364 1,282,804 Percentage 58.43% 41.57%
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U.S. senator before election Maria Cantwell Democratic Elected U.S. senator Maria Cantwell Democratic

Three-term Democrat Maria Cantwell was re-elected with 61% of the vote in 2012. She ran.

Washington holds non-partisan blanket primaries, in which the top two finishers advance to the general election regardless of party. Cantwell and former state Republican Party chair Susan Hutchison faced each other in November.

Cantwell won re-election by a large margin.

West Virginia

West Virginia election

Turnout	47.04%
125x136px 125x136px Nominee Joe Manchin Patrick Morrisey Party Democratic Republican Popular vote 290,510 271,113 Percentage 49.57% 46.26%
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U.S. senator before election Joe Manchin Democratic Elected U.S. senator Joe Manchin Democratic

One-term Democrat Joe Manchin was elected with 61% of the vote in 2012. He originally won the seat in a 2010 special election. Manchin ran for re-election and won the May 8 Democratic primary. Environmental activist Paula Jean Swearengin, also ran for the Democratic nomination.

West Virginia Attorney General Patrick Morrisey received the Republican nomination in the May 8 primary. Representative Evan Jenkins, coal miner Bo Copley, Jack Newbrough, Don Blankenship, and Tom Willis ran for the Republican nomination.

Despite recent Republican successes in West Virginia, Manchin was able to win re-election to a second term.

Wisconsin

Wisconsin election

Turnout	81.81%
125x136px Nominee Tammy Baldwin Leah Vukmir Party Democratic Republican Popular vote 1,472,914 1,184,885 Percentage 55.36% 44.53%
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U.S. senator before election Tammy Baldwin Democratic Elected U.S. senator Tammy Baldwin Democratic

One-term Democrat Tammy Baldwin was elected with 51% of the vote in 2012. She ran.

State Senator Leah Vukmir and businessman and member of Wisconsin Board of Veterans Affairs Kevin Nicholson ran for the Republican nomination, with Vukmir proceeding to the general election.

Baldwin was re-elected with over 55% of the vote.

Wyoming

Wyoming Election

Turnout	77.43%
125x136px Nominee John Barrasso Gary Trauner Party Republican Democratic Popular vote 136,210 61,227 Percentage 66.96% 30.10%
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U.S. senator before election John Barrasso Republican Elected U.S. senator John Barrasso Republican

One-term Republican John Barrasso was elected with 76% of the vote in 2012. Barrasso was appointed to the seat in 2007 and won a special election in 2008. He ran.

Gary Trauner, a Jackson Hole businessman and U.S. House candidate in 2006 and 2008, was the Democratic nominee.

Barrasso was easily elected to a second term, defeating Trauner.

National map of results by county

Map of the county results in Senate races. Does not include the special elections that took place in Minnesota and Mississippi.

File:National Senate results, 2018.png

Democratic

  +80%

  70-80%

  60-70%

  50-60%

  40-50%

Republican

  +90%

  80-90%

  70-80%

  60-70%

  50-60%

  40-50%

Independent (ME and VT)

  70-80%

  60-70%

  50-60%

  40-50%

Kevin de León (CA)

  70-80%

  60-70%

  50-60%

See also

• 115th United States Congress
• 116th United States Congress
• 2018 United States House of Representatives elections
• 2018 United States gubernatorial elections