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 U.S. Senate elections
Dem. caucus 53 −551for control47 Republicans +5
6 seats flipped (AK, AR, IL, IN, ND, WI) — Democrats held control. Independents (Sanders, King) are counted in the caucus they organize with and shown in gold on the map.
VTNHCTDEMD
States with a seat up this cycle, filled by margin · cyan outlines a seat that flipped party · gold an independent · hover for the detail
Every contest
Statewide totals; candidate-level detail joins when the raw store is re-fetched with names.
| State | Won | Margin | Pres. 2008 | Democratic | Republican | Total |
|---|---|---|---|---|---|---|
| Alaska | O | R+21.5 | 60,045 | 90,839 | 255,421 | |
| Alabama | R | R+21.6 | 515,619 | 968,181 | 1,483,800 | |
| Arkansas | R | R+19.9 | 288,156 | 451,618 | 779,581 | |
| Arizona | R | R+8.5 | 592,011 | 1,005,615 | 1,702,326 | |
| California | D | D+24.0 | 5,218,441 | 4,217,366 | 10,000,093 | |
| Colorado | D | D+9.0 | 851,590 | 822,731 | 1,772,190 | |
| Connecticut | D | D+22.4 | 605,204 | 498,341 | 1,152,443 | |
| Delaware | D | D+25.0 | 174,012 | 123,053 | 307,367 | |
| Florida | R | D+2.8 | 1,092,936 | 2,645,743 | 5,411,016 | |
| Georgia | R | R+5.2 | 996,516 | 1,489,904 | 2,555,170 | |
| Hawaii | D | D+45.2 | 277,228 | 79,939 | 370,583 | |
| Iowa | R | D+9.5 | 371,686 | 718,215 | 1,115,191 | |
| Idaho | R | R+25.4 | 112,057 | 319,953 | 449,439 | |
| Illinois | R | D+25.1 | 1,719,478 | 1,778,698 | 3,703,370 | |
| Indiana | R | D+1.0 | 697,775 | 952,116 | 1,744,221 | |
| Kansas | R | R+15.0 | 220,971 | 587,175 | 837,692 | |
| Kentucky | R | R+16.2 | 600,052 | 755,706 | 1,355,758 | |
| Louisiana | R | R+18.6 | 476,572 | 715,415 | 1,264,994 | |
| Maryland | D | D+25.4 | 1,140,615 | 655,666 | 1,831,744 | |
| Missouri | R | R+0.1 | 789,736 | 1,054,160 | 1,943,872 | |
| North Carolina | R | D+0.3 | 1,145,074 | 1,458,046 | 2,658,807 | |
| North Dakota | R | R+8.6 | 52,955 | 181,689 | 238,534 | |
| New Hampshire | R | D+9.7 | 167,545 | 273,218 | 454,710 | |
| Nevada | D | D+12.6 | 362,785 | 321,361 | 721,404 | |
| New York | D | D+26.9 | 3,047,880 | 1,239,605 | 4,595,515 | |
| Ohio | R | D+4.6 | 1,503,297 | 2,168,742 | 3,814,450 | |
| Oklahoma | R | R+31.3 | 265,814 | 718,482 | 1,017,151 | |
| Oregon | D | D+16.3 | 825,507 | 566,199 | 1,442,588 | |
| Pennsylvania | R | D+10.3 | 1,948,716 | 2,028,945 | 3,977,661 | |
| South Carolina | R | R+9.0 | 364,598 | 810,771 | 1,296,841 | |
| South Dakota | R | R+8.4 | 0 | 227,947 | 227,947 | |
| Utah | R | R+28.2 | 191,732 | 360,403 | 585,230 | |
| Vermont | D | D+37.0 | 151,281 | 72,699 | 235,065 | |
| Washington | D | D+17.2 | 1,314,930 | 1,196,164 | 2,511,094 | |
| Wisconsin | R | D+13.9 | 1,020,958 | 1,126,133 | 2,170,693 | |
| West Virginia | D | R+13.1 | 283,358 | 230,013 | 529,948 |
Source. MIT Election Data + Science Lab — 2010 US Senate returns, party-classified by literal ballot party · statewide certified totals. Real returns — nothing estimated.