Elections / 1998 · US Senate
The 1998 Senate map
34 Senate contests were decided in 1998: Democrats won 18, Republicans 16. Every contest below links to its page with the state's full Senate history.
1998 U.S. Senate elections
Dem. caucus 4551for control55 Republicans
8 seats flipped (AL, CO, IL, IN, KY, NC, OH, OR) — Republicans held control. Independents (Sanders, King) are counted in the caucus they organize with and shown in gold on the map.
VTNHCTMD
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. 1996 | Democratic | Republican | Total |
|---|---|---|---|---|---|---|
| Alaska | R | R+17.5 | 43,743 | 165,227 | 221,142 | |
| Alabama | R | R+7.0 | 474,568 | 817,973 | 1,292,541 | |
| Arkansas | D | D+16.9 | 385,878 | 295,870 | 700,644 | |
| Arizona | R | D+2.2 | 275,224 | 696,577 | 1,013,093 | |
| California | D | D+12.9 | 4,410,056 | 3,575,078 | 8,311,905 | |
| Colorado | R | R+1.4 | 464,754 | 829,370 | 1,327,235 | |
| Connecticut | D | D+18.1 | 628,306 | 312,177 | 964,457 | |
| Florida | D | D+5.7 | 2,436,407 | 1,463,755 | 3,900,162 | |
| Georgia | R | R+1.2 | 791,904 | 918,540 | 1,753,911 | |
| Hawaii | D | D+25.3 | 315,252 | 70,964 | 398,124 | |
| Iowa | R | D+10.3 | 289,049 | 648,480 | 947,632 | |
| Idaho | R | R+18.5 | 107,375 | 262,966 | 378,174 | |
| Illinois | R | D+17.5 | 1,610,496 | 1,709,041 | 3,394,521 | |
| Indiana | D | R+5.6 | 1,012,244 | 552,732 | 1,588,617 | |
| Kansas | R | R+18.2 | 229,718 | 474,639 | 727,236 | |
| Kentucky | R | D+1.0 | 563,051 | 569,817 | 1,145,414 | |
| Louisiana | D | D+12.1 | 630,395 | 314,580 | 969,165 | |
| Maryland | D | D+16.0 | 1,062,810 | 444,637 | 1,507,447 | |
| Missouri | R | D+6.3 | 690,208 | 830,625 | 1,576,857 | |
| North Carolina | D | R+4.7 | 1,029,237 | 945,943 | 2,012,143 | |
| North Dakota | D | R+6.8 | 134,747 | 75,013 | 213,358 | |
| New Hampshire | R | D+10.3 | 88,883 | 213,477 | 314,696 | |
| Nevada | D | D+1.0 | 208,621 | 208,220 | 435,864 | |
| New York | D | D+28.9 | 2,386,314 | 1,680,203 | 4,670,805 | |
| Ohio | R | D+6.4 | 1,482,054 | 1,922,087 | 3,404,141 | |
| Oklahoma | R | R+7.8 | 268,898 | 570,682 | 859,713 | |
| Oregon | D | D+8.1 | 682,425 | 377,739 | 1,117,747 | |
| Pennsylvania | R | D+9.2 | 1,028,839 | 1,814,180 | 2,957,499 | |
| South Carolina | D | R+6.0 | 563,377 | 488,238 | 1,068,606 | |
| South Dakota | D | R+3.5 | 162,884 | 95,431 | 262,111 | |
| Utah | R | R+21.1 | 163,172 | 316,652 | 494,897 | |
| Vermont | D | D+22.3 | 154,567 | 48,051 | 213,407 | |
| Washington | D | D+12.5 | 1,103,184 | 785,377 | 1,888,561 | |
| Wisconsin | D | D+10.3 | 890,059 | 852,272 | 1,760,130 |
Source. MIT Election Data + Science Lab — 1998 US Senate returns, party-classified by literal ballot party · statewide certified totals. Real returns — nothing estimated.