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2010 general · November 2, 2010

2010 U.S. Senate election results

Every U.S. Senate race in the 2010 general election, state by state: winners, margins and seats that changed party.

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Races37
Changed party4
Unopposed3%1 races

U.S. Senate

D 13 · R 23 · Uncalled 1

RaceWinnerWon byNotes
AlabamaRichard C. Shelby (R)30.5
AlaskaNo winner recorded—
ArizonaJohn McCain (R)24.2
ArkansasJohn Boozman (R)21.0Flipped
CaliforniaBarbara Boxer (D)10.0
ColoradoMichael F. Bennet (D)1.6
ConnecticutRichard Blumenthal (D)11.9
Delaware (special)Chris Coons (D)16.6
FloridaMarco Rubio (R)19.2
GeorgiaJohnny Isakson (R)19.3
HawaiiDaniel K. Inouye (D)53.2
IdahoMike Crapo (R)46.2
Illinois (special)Mark Kirk (R)1.6
IndianaDaniel Coats (R)14.6Flipped
IowaChuck Grassley (R)31.0
KansasJerry Moran (R)43.7
KentuckyRand Paul (R)11.5
LouisianaDavid Vitter (R)18.9
MarylandBarbara A. Mikulski (D)26.4
MissouriRoy Blunt (R)13.6
NevadaHarry Reid (D)5.7
New HampshireKelly Ayotte (R)23.2
New York (special)Kirsten E. Gillibrand (D)27.8
New YorkCharles E. Schumer (D)34.1
North CarolinaRichard Burr (R)11.8
North DakotaJohn Hoeven (R)54.0Flipped
OhioRob Portman (R)17.4
OklahomaTom Coburn (R)44.5
OregonRon Wyden (D)18.0
PennsylvaniaPatrick J. Toomey (R)2.0
South CarolinaJim DeMint (R)33.8
South DakotaJohn Thune (R)Unopposed
UtahMike Lee (R)28.8
VermontPatrick J. Leahy (D)33.4
WashingtonPatty Murray (D)4.7
West Virginia (special)Joe Manchin, III (D)10.1
WisconsinRon Johnson (R)4.8Flipped

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