| LIB | DEM | REP | IND W/I | |
|---|---|---|---|---|
| Counties | Daniel L.J. Adams | Jerry M. Brady | Dirk Kempthorne | Kevin Powers |
| Ada | 1,803 | 52,360 | 51,258 | 3 |
| Adams | 45 | 547 | 1,009 | 0 |
| Bannock | 503 | 13,070 | 11,416 | 0 |
| Bear Lake | 36 | 734 | 1,663 | 0 |
| Benewah | 97 | 1,227 | 1,919 | 0 |
| Bingham | 259 | 4,389 | 7,659 | 0 |
| Blaine | 180 | 3,403 | 2,693 | 0 |
| Boise | 91 | 1,184 | 1,394 | 0 |
| Bonner | 252 | 4,932 | 5,797 | 7 |
| Bonneville | 580 | 10,380 | 17,520 | 0 |
| Boundary | 74 | 941 | 1,766 | 0 |
| Butte | 27 | 469 | 814 | 0 |
| Camas | 11 | 136 | 258 | 0 |
| Canyon | 752 | 13,795 | 22,536 | 1 |
| Caribou | 38 | 846 | 1,642 | 0 |
| Cassia | 133 | 1,479 | 4,377 | 0 |
| Clark | 8 | 72 | 226 | 0 |
| Clearwater | 68 | 1,423 | 1,635 | 0 |
| Custer | 49 | 480 | 1,248 | 1 |
| Elmore | 92 | 2,082 | 3,131 | 0 |
| Franklin | 72 | 588 | 2,611 | 0 |
| Fremont | 105 | 1,110 | 2,749 | 0 |
| Gem | 123 | 2,182 | 3,014 | 1 |
| Gooding | 84 | 1,487 | 2,543 | 0 |
| Idaho | 190 | 2,075 | 4,252 | 0 |
| Jefferson | 122 | 1,661 | 4,902 | 0 |
| Jerome | 87 | 1,427 | 3,065 | 0 |
| Kootenai | 646 | 12,547 | 18,967 | 0 |
| Latah | 264 | 6,456 | 4,963 | 0 |
| Lemhi | 96 | 873 | 2,533 | 0 |
| Lewis | 23 | 618 | 754 | 0 |
| Lincoln | 31 | 508 | 807 | 0 |
| Madison | 127 | 1,771 | 5,280 | 0 |
| Minidoka | 120 | 1,630 | 3,569 | 0 |
| Nez Perce | 183 | 6,523 | 5,867 | 0 |
| Oneida | 30 | 299 | 955 | 0 |
| Owyhee | 81 | 785 | 1,771 | 0 |
| Payette | 113 | 1,930 | 3,530 | 0 |
| Power | 25 | 932 | 1,324 | 0 |
| Shoshone | 105 | 2,378 | 1,802 | 0 |
| Teton | 41 | 1,043 | 1,245 | 0 |
| Twin Falls | 309 | 6,433 | 11,187 | 0 |
| Valley | 60 | 1,463 | 1,803 | 0 |
| Washington | 52 | 1,043 | 2,112 | 0 |
| TOTAL | 8,187 | 171,711 | 231,566 | 13 |
| Plurality | 59,855 | |||
| Percentage | 2.0% | 41.7% | 56.3% | 0.0% |