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2012 general · November 6, 2012

2012 U.S. Senate election results

Every U.S. Senate race in the 2012 general election, state by state: winners, margins and seats that changed party.

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Races33
Changed party4
Unopposed0%0 races

U.S. Senate

D 23 · R 8 · Other 2

RaceWinnerWon byNotes
ArizonaJeff Flake (R)3.0
CaliforniaDianne Feinstein (D)25.0
ConnecticutChristopher Murphy (D)11.8Flipped
DelawareThomas R. Carper (D)37.5
FloridaBill Nelson (D)13.0
HawaiiMazie K. Hirono (D)25.2
IndianaJoe Donnelly (D)5.8Flipped
MaineAngus S. King, Jr. (IND)22.1Flipped
MarylandBenjamin L. Cardin (D)29.6
MassachusettsElizabeth Warren (D)7.5
MichiganDebbie Stabenow (D)20.8
MinnesotaAmy Klobuchar (D)34.7
MississippiRoger F. Wicker (R)16.6
MissouriClaire McCaskill (D)15.7
MontanaJon Tester (D)3.7
NebraskaDeb Fischer (R)15.5Flipped
NevadaDean Heller (R)1.2
New JerseyRobert Menendez (D)19.5
New MexicoMartin Heinrich (D)5.7
New YorkKirsten E. Gillibrand (D)45.8
North DakotaHeidi Heitkamp (D)0.9
OhioSherrod Brown (D)6.0
PennsylvaniaRobert P. Casey, Jr. (D)9.1
Rhode IslandSheldon Whitehouse (D)29.8
TennesseeBob Corker (R)34.5
TexasTed Cruz (R)15.8
UtahOrrin G. Hatch (R)35.3
VermontBernard Sanders (IND)46.1
VirginiaTim Kaine (D)5.9
WashingtonMaria Cantwell (D)20.9
West VirginiaJoe Manchin, III (D)24.1
WisconsinTammy Baldwin (D)5.5
WyomingJohn Barrasso (R)54.0

Results are each source's final count; margins are the winner's lead over the runner-up in points of the vote. Source: MIT Election Data and Science Lab