| United States Senator | ||||
|---|---|---|---|---|
| Dem. | Dem. | Rep. | Rep. | |
| Counties | William Bryk | P. Tom Sullivan | Mike Crapo | Claude M. (Skip) Davis III |
| Ada | 1,585 | 4,453 | 28,382 | 6,265 |
| Adams | 12 | 59 | 725 | 178 |
| Bannock | 853 | 2,167 | 3,660 | 1,290 |
| Bear Lake | 28 | 55 | 1,275 | 288 |
| Benewah | 83 | 202 | 780 | 234 |
| Bingham | 102 | 255 | 4,984 | 1,420 |
| Blaine | 280 | 1,237 | 1,082 | 174 |
| Boise | 39 | 53 | 1,135 | 322 |
| Bonner | 156 | 439 | 3,860 | 1,316 |
| Bonneville | 243 | 881 | 8,377 | 2,246 |
| Boundary | 37 | 81 | 1,017 | 322 |
| Butte | 10 | 32 | 356 | 117 |
| Camas | 4 | 9 | 299 | 68 |
| Canyon | 353 | 827 | 12,496 | 2,691 |
| Caribou | 18 | 31 | 984 | 294 |
| Cassia | 34 | 36 | 3,213 | 819 |
| Clark | 2 | 5 | 221 | 77 |
| Clearwater | 74 | 205 | 782 | 278 |
| Custer | 17 | 50 | 766 | 310 |
| Elmore | 94 | 180 | 2,232 | 522 |
| Franklin | 32 | 56 | 1,636 | 452 |
| Fremont | 29 | 68 | 2,325 | 504 |
| Gem | 49 | 133 | 2,097 | 483 |
| Gooding | 45 | 148 | 1,245 | 317 |
| Idaho | 61 | 212 | 2,171 | 810 |
| Jefferson | 42 | 110 | 2,858 | 817 |
| Jerome | 53 | 136 | 1,707 | 428 |
| Kootenai | 375 | 1,053 | 10,009 | 3,031 |
| Latah | 172 | 925 | 2,561 | 718 |
| Lemhi | 26 | 62 | 1,325 | 449 |
| Lewis | 23 | 60 | 384 | 145 |
| Lincoln | 24 | 67 | 581 | 135 |
| Madison | 44 | 110 | 3,877 | 685 |
| Minidoka | 58 | 110 | 2,008 | 540 |
| Nez Perce | 314 | 957 | 1,796 | 393 |
| Oneida | 65 | 114 | 525 | 147 |
| Owyhee | 27 | 53 | 1,319 | 302 |
| Payette | 53 | 129 | 1,673 | 368 |
| Power | 32 | 92 | 854 | 187 |
| Shoshone | 264 | 729 | 533 | 195 |
| Teton | 177 | 1,032 | 544 | 118 |
| Twin Falls | 162 | 518 | 5,865 | 1,666 |
| Valley | 49 | 119 | 1,395 | 471 |
| Washington | 27 | 90 | 1,418 | 558 |
| TOTAL | 6,227 | 18,340 | 127,332 | 33,150 |
| Plurality | 12,113 | 94,182 | ||
| Percentage | 25.3% | 74.7% | 79.3% | 20.7% |