2010 Senate Elections
Republicans Sweep Senate Races
36 seats contested. 14 seats changed hands.
50D
50R
50
Democratic Seats
50
Republican Seats
36
Seats Contested
R+1.6
Closest: Illinois
Republicans gained 13 seats in the 2010 Senate elections (50-50). Of 41 Class 1 seats contested, Democrats defended 26 and won 15; Republicans defended 13 and won 26. IL, PA, WI, MA, NC, OH, LA, AR, NH, FL, IA, ND, SD flipped Republican; NV flipped Democratic.
Before:63D-37R
After:50D-50R
14 flipped
Seats flipped:Illinois(D→R)|Pennsylvania(D→R)|Wisconsin(D→R)|Massachusetts(D→R)|Nevada(R→D)|North Carolina(D→R)|Ohio(D→R)|Louisiana(D→R)|Arkansas(D→R)|New Hampshire(D→R)|Florida(D→R)|Iowa(D→R)|North Dakota(D→R)|South Dakota(D→R)
14 Seats Flipped
All Races
IL
R+1.6
Giannoulias vs Kirk
CO
D+1.7
Bennet vs Buck
PA
R+2.0
Sestak vs Toomey
WA
D+4.7
Murray vs Rossi
WI
R+4.8
Feingold vs Johnson
MA
R+4.9
Coakley vs Brown
NV
D+5.7
Reid vs Angle
CA
D+10.0
Boxer vs Fiorina
WV
D+10.1
Manchin vs Raese
KY
R+11.5
Conway vs Paul
NC
R+11.8
Marshall vs Burr
CT
D+11.9
Blumenthal vs McMahon
IN
R+14.6
Ellsworth vs Coats
MO
R+16.4
Carnahan vs Blunt
DE
D+16.6
Coons vs O'Donnell
OH
R+17.4
Fisher vs Portman
OR
D+18.0
Wyden vs Huffman
LA
R+18.9
Melancon vs Vitter
GA
R+19.3
Thurmond vs Isakson
AR
R+21.0
Lincoln vs Boozman
NH
R+23.2
Hodes vs Ayotte
AZ
R+24.1
Glassman vs McCain
MD
D+26.4
Mikulski vs Wargotz
FL
R+28.7
Meek vs Rubio
UT
R+28.8
Granato vs Lee
AL
R+30.5
Barnes vs Shelby
IA
R+31.1
Conlin vs Grassley
VT
D+33.4
Leahy vs Britton
SC
R+33.8
Greene vs DeMint
KS
R+43.7
Johnston vs Moran
OK
R+44.5
Rogers vs Coburn
ID
R+46.3
Sullivan vs Crapo
HI
D+53.2
Inouye vs Cavasso
ND
R+53.9
Potter vs Hoeven
NY
D+62.0
Gillibrand vs DioGuardi
SD
R+100.0
D vs Thune