Elections / 1990 · US Senate
The 1990 Senate map
35 Senate contests were decided in 1990: Democrats won 18, Republicans 17. Every contest below links to its page with the state's full Senate history.
1990 U.S. Senate elections
Dem. caucus 56 +151for control44 Republicans −1
1 seat flipped (MN) — Democrats held control. Independents (Sanders, King) are counted in the caucus they organize with and shown in gold on the map.
NHMARINJDE
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. 1988 | Democratic | Republican | Total |
|---|---|---|---|---|---|---|
| Alaska | R | R+23.3 | 61,152 | 125,806 | 186,958 | |
| Alabama | D | R+19.3 | 717,814 | 467,190 | 1,185,004 | |
| Arkansas | D | R+14.2 | 493,910 | 0 | 493,910 | |
| Colorado | R | R+7.8 | 425,746 | 569,048 | 1,022,027 | |
| Delaware | D | R+12.4 | 112,918 | 64,554 | 180,152 | |
| Georgia | D | R+20.3 | 1,033,439 | 0 | 1,033,439 | |
| Hawaii | D | D+9.5 | 188,901 | 155,978 | 349,666 | |
| Iowa | D | D+10.2 | 535,975 | 446,869 | 983,933 | |
| Idaho | R | R+26.1 | 122,295 | 193,641 | 315,936 | |
| Illinois | D | R+2.1 | 2,115,377 | 1,135,628 | 3,251,005 | |
| Indiana | R | R+20.2 | 696,639 | 806,048 | 1,502,687 | |
| Kansas | R | R+13.2 | 207,491 | 578,605 | 786,096 | |
| Kentucky | R | R+11.6 | 437,976 | 478,034 | 916,010 | |
| Louisiana | D | R+10.2 | 1 | 0 | 1 | |
| Massachusetts | D | D+7.9 | 1,321,712 | 992,917 | 2,424,579 | |
| Maine | R | R+11.5 | 201,053 | 319,167 | 520,320 | |
| Michigan | D | R+7.9 | 1,471,753 | 1,055,695 | 2,560,244 | |
| Minnesota | D | D+7.0 | 911,999 | 864,375 | 1,806,194 | |
| Mississippi | R | R+20.8 | 0 | 274,244 | 274,244 | |
| Montana | D | R+5.9 | 217,563 | 93,836 | 319,336 | |
| North Carolina | R | R+16.3 | 981,573 | 1,087,331 | 2,068,904 | |
| Nebraska | D | R+21.0 | 349,779 | 243,013 | 592,792 | |
| New Hampshire | R | R+26.2 | 91,299 | 189,792 | 290,808 | |
| New Jersey | D | R+13.6 | 977,810 | 918,874 | 1,938,454 | |
| New Mexico | R | R+5.0 | 110,033 | 296,712 | 406,745 | |
| Oklahoma | D | R+16.6 | 735,684 | 148,814 | 884,498 | |
| Oregon | R | D+4.7 | 507,743 | 590,095 | 1,099,255 | |
| Rhode Island | D | D+11.7 | 225,105 | 138,947 | 364,052 | |
| South Carolina | R | R+23.9 | 244,112 | 482,032 | 750,266 | |
| South Dakota | R | R+6.3 | 116,727 | 135,682 | 258,976 | |
| Tennessee | D | R+16.3 | 530,898 | 233,703 | 783,813 | |
| Texas | R | R+12.6 | 1,429,986 | 2,302,357 | 3,821,432 | |
| Virginia | R | R+20.5 | 0 | 876,782 | 1,073,537 | |
| West Virginia | D | D+4.7 | 276,234 | 128,071 | 404,305 | |
| Wyoming | R | R+22.5 | 56,848 | 100,784 | 157,632 |
Source. MIT Election Data + Science Lab — 1990 US Senate returns, party-classified by literal ballot party · statewide certified totals. Real returns — nothing estimated.