| United States Senator | |||
|---|---|---|---|
| REP | DEM | CON | |
| Counties | Mike Crapo | Jerry Sturgill | Ray J. Writz |
| Ada | 104,650 | 72,847 | 9,646 |
| Adams | 1,463 | 459 | 202 |
| Bannock | 19,883 | 11,585 | 2,181 |
| Bear Lake | 2,415 | 291 | 208 |
| Benewah | 3,103 | 746 | 293 |
| Bingham | 12,114 | 2,997 | 1,401 |
| Blaine | 4,562 | 5,961 | 226 |
| Boise | 2,497 | 860 | 391 |
| Bonner | 13,908 | 5,767 | 1,029 |
| Bonneville | 31,093 | 9,158 | 3,229 |
| Boundary | 3,961 | 920 | 274 |
| Butte | 948 | 185 | 100 |
| Camas | 414 | 126 | 36 |
| Canyon | 50,006 | 17,007 | 5,242 |
| Caribou | 2,450 | 350 | 234 |
| Cassia | 6,418 | 1,011 | 721 |
| Clark | 225 | 32 | 23 |
| Clearwater | 2,865 | 711 | 158 |
| Custer | 1,693 | 429 | 253 |
| Elmore | 6,059 | 1,752 | 610 |
| Franklin | 4,682 | 441 | 365 |
| Fremont | 4,521 | 692 | 498 |
| Gem | 5,779 | 1,378 | 694 |
| Gooding | 3,834 | 958 | 399 |
| Idaho | 6,272 | 1,247 | 594 |
| Jefferson | 9,120 | 1,196 | 1,067 |
| Jerome | 4,931 | 1,253 | 574 |
| Kootenai | 47,636 | 15,365 | 2,945 |
| Latah | 9,626 | 8,050 | 645 |
| Lemhi | 3,013 | 723 | 309 |
| Lewis | 1,239 | 257 | 102 |
| Lincoln | 1,263 | 354 | 123 |
| Madison | 12,826 | 1,473 | 1,117 |
| Minidoka | 5,067 | 1,108 | 591 |
| Nez Perce | 12,188 | 4,621 | 560 |
| Oneida | 1,719 | 206 | 133 |
| Owyhee | 2,909 | 581 | 344 |
| Payette | 6,480 | 1,549 | 600 |
| Power | 1,942 | 686 | 162 |
| Shoshone | 3,463 | 1,477 | 205 |
| Teton | 2,659 | 2,156 | 170 |
| Twin Falls | 20,701 | 6,559 | 2,452 |
| Valley | 3,202 | 1,883 | 240 |
| Washington | 3,218 | 842 | 331 |
| TOTAL | 449,017 | 188,249 | 41,677 |
| Plurality | 260,768 | ||
| Percentage | 65.1 % | 27.3 % | 6.0 % |