2018 Senate Elections
Democrats Flip the Senate
33 seats contested. Control shifts to Democrats with a 55-45 majority.
55DMajority
45R
55
Democratic Seats
45
Republican Seats
33
Seats Contested
R+0.1
Closest: Florida
Democratic MajorityControl Flipped
Democrats gained 10 seats in the 2018 Senate elections, flipping control from 45-55 to 55-45. Of 68 Class 2 seats contested, Democrats defended 31 and won 47; Republicans defended 21 and won 21. FL, IN, MO, ND flipped Republican; AZ, AZ, WV, MT, NV, OH, WI, PA, ME flipped Democratic.
Before:45D-55R
After:55D-45R
13 flipped
Control changed
Seats flipped:Florida(D→R)|Arizona(R→D)|Arizona(R→D)|West Virginia(R→D)|Montana(R→D)|Nevada(R→D)|Indiana(D→R)|Ohio(R→D)|Missouri(D→R)|Wisconsin(R→D)|North Dakota(D→R)|Pennsylvania(R→D)|Maine(R→D)
13 Seats Flipped
Flipped to Democratic (9)
Flipped to Republican (4)
All Races
FL
R+0.1
Nelson vs Scott
AZ
D+2.3
Sinema vs McSally
TX
R+2.6
O'Rourke vs Cruz
WV
D+3.3
Manchin vs Morrisey
MT
D+3.5
Tester vs Rosendale
NV
D+5.0
Rosen vs Heller
IN
R+5.9
Donnelly vs Braun
MI
D+6.5
Stabenow vs James
OH
D+6.8
Brown vs Renacci
MO
R+9.1
McCaskill vs Hawley
TN
R+10.8
Bredesen vs Blackburn
WI
D+10.8
Baldwin vs Vukmir
ND
R+10.8
Heitkamp vs Cramer
NJ
D+11.2
Menendez vs Hugin
PA
D+13.1
Jr. vs Barletta
VA
D+16.0
Kaine vs Stewart
WA
D+16.9
Cantwell vs Hutchison
NE
R+19.1
Raybould vs Fischer
CT
D+20.2
Murphy vs Corey
ME
D+21.2
King vs Brakey
DE
D+22.1
Carper vs Arlett
RI
D+23.1
Whitehouse vs Flanders
NM
D+23.6
Heinrich vs Rich
MA
D+24.2
Warren vs Diehl
MS
R+27.2
Espy vs Wicker
UT
R+31.7
Wilson vs Romney
NY
D+34.0
Gillibrand vs Farley
MD
D+34.5
Cardin vs Campbell
MN
D+34.8
Smith vs Housley
WY
R+36.9
Trauner vs Barrasso
VT
D+40.0
Sanders vs Zupan
HI
D+42.3
Hirono vs Curtis
CA
D+99.4
León vs R