| LIB | DEM | REP | |
|---|---|---|---|
| Counties | Michael J. Kempf | Bruce M. Perry | Jim Risch |
| Ada | 3,655 | 51,350 | 48,915 |
| Adams | 63 | 501 | 981 |
| Bannock | 1,124 | 10,919 | 12,307 |
| Bear Lake | 69 | 598 | 1,705 |
| Benewah | 192 | 1,301 | 1,605 |
| Bingham | 386 | 3,711 | 8,044 |
| Blaine | 300 | 3,390 | 2,376 |
| Boise | 163 | 1,003 | 1,439 |
| Bonner | 588 | 4,445 | 5,437 |
| Bonneville | 969 | 8,817 | 18,137 |
| Boundary | 140 | 930 | 1,632 |
| Butte | 44 | 379 | 847 |
| Camas | 23 | 110 | 266 |
| Canyon | 1,267 | 12,718 | 22,491 |
| Caribou | 68 | 688 | 1,725 |
| Cassia | 181 | 1,252 | 4,481 |
| Clark | 17 | 57 | 215 |
| Clearwater | 107 | 1,354 | 1,545 |
| Custer | 67 | 434 | 1,233 |
| Elmore | 206 | 1,846 | 3,128 |
| Franklin | 116 | 576 | 2,519 |
| Fremont | 185 | 860 | 2,825 |
| Gem | 206 | 1,870 | 3,155 |
| Gooding | 151 | 1,235 | 2,647 |
| Idaho | 285 | 1,918 | 3,989 |
| Jefferson | 224 | 1,394 | 4,934 |
| Jerome | 135 | 1,241 | 3,134 |
| Kootenai | 1,527 | 13,773 | 16,045 |
| Latah | 521 | 6,070 | 4,656 |
| Lemhi | 165 | 828 | 2,350 |
| Lewis | 41 | 543 | 758 |
| Lincoln | 58 | 421 | 815 |
| Madison | 258 | 1,229 | 5,278 |
| Minidoka | 197 | 1,551 | 3,469 |
| Nez Perce | 434 | 6,165 | 5,486 |
| Oneida | 44 | 288 | 924 |
| Owyhee | 95 | 713 | 1,799 |
| Payette | 194 | 1,693 | 3,596 |
| Power | 64 | 770 | 1,393 |
| Shoshone | 221 | 2,422 | 1,471 |
| Teton | 82 | 944 | 1,207 |
| Twin Falls | 529 | 5,677 | 11,339 |
| Valley | 115 | 1,426 | 1,710 |
| Washington | 86 | 1,028 | 2,009 |
| TOTAL | 15,562 | 160,438 | 226,017 |
| Plurality | 65,579 | ||
| Percentage | 3.9% | 39.9% | 56.2% |