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Elections / 2010 · US Senate

The 2010 Senate map

36 Senate contests were decided in 2010: Democrats won 12, Republicans 23, independents and others 1. Every contest below links to its page with the state's full Senate history.

2010 US Senate elections
2010 Senate margin by stateA map of the United States with each state filled by its 2010 result — deep red (Republican) through neutral to deep blue (Democratic), and gold where an independent or third-party candidate carried the state.Alabama · R+30.5Alaska · O+5.4Arizona · R+24.3Colorado · D+1.6Florida · R+28.7Georgia · R+19.3Indiana · R+14.6Kansas · R+43.7Maine · —Massachusetts · —Minnesota · —New Jersey · —North Carolina · R+11.8North Dakota · R+54.0Oklahoma · R+44.5Pennsylvania · R+2.0South Dakota · R+100.0Texas · —Wyoming · —Connecticut · D+9.3Missouri · R+13.6West Virginia · D+10.1Illinois · R+1.6New Mexico · —Arkansas · R+21.0California · D+10.0Delaware · D+16.6District of Columbia · —Hawaii · D+53.2Iowa · R+31.1Kentucky · R+11.5Maryland · D+26.5Michigan · —Mississippi · —Montana · —New Hampshire · R+23.2New York · D+39.3Ohio · R+17.4Oregon · D+18.0Tennessee · —Utah · R+28.8Virginia · —Washington · D+4.7Wisconsin · R+4.8Nebraska · —South Carolina · R+34.4Idaho · R+46.3Nevada · D+5.7Vermont · D+33.4Louisiana · R+18.9Rhode Island · —
2010Senate margin
D+60
R+60
States with a Senate contest in 2010, each filled by its result. States without a seat up this cycle are faint.
Gold marks a state an independent or third-party candidate carried — the blue/red ramp is the Democratic-vs-Republican margin only where a major party won.
Smaller states, enlarged
VTD+33.4NHR+23.2CTD+9.3DED+16.6MDD+26.5
Blue and red show the Democratic-vs-Republican margin; gold marks a seat an independent won (e.g. Vermont or Maine). Where a state ran two contests in one year, the map shows the regular-cycle result.
Cycle summary
Wins by party — seats decided this cycle, not the resulting chamber balance.
Contests
36
Democratic wins
12
Republican wins
23
Other wins
1
Democratic 1212Republican 2323Other 11
Every contest
Statewide totals; candidate-level detail joins when the raw store is re-fetched with names.
StateWonMarginDemocraticRepublicanTotal
AlaskaO
−12.1%
60,04590,839255,421
AlabamaR
−30.5%
515,619968,1811,483,800
ArkansasR
−21.0%
288,156451,618779,581
ArizonaR
−24.3%
592,0111,005,6151,702,326
CaliforniaD
+10.0%
5,218,4414,217,36610,000,093
ColoradoD
+1.6%
851,590822,7311,772,190
ConnecticutD
+9.3%
605,204498,3411,152,443
DelawareD
+16.6%
174,012123,053307,367
FloridaR
−28.7%
1,092,9362,645,7435,411,016
GeorgiaR
−19.3%
996,5161,489,9042,555,170
HawaiiD
+53.2%
277,22879,939370,583
IowaR
−31.1%
371,686718,2151,115,191
IdahoR
−46.3%
112,057319,953449,439
IllinoisR
−1.6%
1,719,4781,778,6983,703,370
IndianaR
−14.6%
697,775952,1161,744,221
KansasR
−43.7%
220,971587,175837,692
KentuckyR
−11.5%
600,052755,7061,355,758
LouisianaR
−18.9%
476,572715,4151,264,994
MarylandD
+26.5%
1,140,615655,6661,831,744
MissouriR
−13.6%
789,7361,054,1601,943,872
North CarolinaR
−11.8%
1,145,0741,458,0462,658,807
North DakotaR
−54.0%
52,955181,689238,534
New HampshireR
−23.2%
167,545273,218454,710
NevadaD
+5.7%
362,785321,361721,404
New YorkD
+39.3%
3,047,8801,239,6054,595,515
OhioR
−17.4%
1,503,2972,168,7423,814,450
OklahomaR
−44.5%
265,814718,4821,017,151
OregonD
+18.0%
825,507566,1991,442,588
PennsylvaniaR
−2.0%
1,948,7162,028,9453,977,661
South CarolinaR
−34.4%
364,598810,7711,296,841
South DakotaR
−100.0%
0227,947227,947
UtahR
−28.8%
191,732360,403585,230
VermontD
+33.4%
151,28172,699235,065
WashingtonD
+4.7%
1,314,9301,196,1642,511,094
WisconsinR
−4.8%
1,020,9581,126,1332,170,693
West VirginiaD
+10.1%
283,358230,013529,948