| DEM | REP | IND | |
|---|---|---|---|
| Counties | Robert C. Huntley | Dirk Kempthorne | Peter Rickards |
| Ada | 29,743 | 60,189 | 2,577 |
| Adams | 379 | 1,237 | 59 |
| Bannock | 9,535 | 13,155 | 556 |
| Bear Lake | 484 | 1,497 | 75 |
| Benewah | 768 | 1,987 | 115 |
| Bingham | 3,006 | 8,501 | 257 |
| Blaine | 2,827 | 2,528 | 168 |
| Boise | 650 | 1,530 | 109 |
| Bonner | 3,875 | 6,743 | 448 |
| Bonneville | 5,904 | 19,181 | 472 |
| Boundary | 833 | 2,032 | 124 |
| Butte | 416 | 761 | 26 |
| Camas | 106 | 316 | 25 |
| Canyon | 8,041 | 24,181 | 818 |
| Caribou | 445 | 1,852 | 54 |
| Cassia | 977 | 4,589 | 279 |
| Clark | 75 | 301 | 14 |
| Clearwater | 988 | 2,019 | 103 |
| Custer | 452 | 1,149 | 50 |
| Elmore | 1,123 | 3,876 | 134 |
| Franklin | 495 | 2,744 | 77 |
| Fremont | 734 | 3,133 | 91 |
| Gem | 1,291 | 3,431 | 127 |
| Gooding | 1,131 | 2,647 | 263 |
| Idaho | 1,303 | 4,195 | 178 |
| Jefferson | 1,104 | 4,877 | 128 |
| Jerome | 1,053 | 3,328 | 383 |
| Kootenai | 8,682 | 19,860 | 888 |
| Latah | 4,980 | 6,697 | 423 |
| Lemhi | 669 | 2,635 | 104 |
| Lewis | 352 | 973 | 38 |
| Lincoln | 355 | 774 | 91 |
| Madison | 940 | 5,453 | 90 |
| Minidoka | 1,213 | 3,945 | 275 |
| Nez Perce | 4,451 | 8,251 | 378 |
| Oneida | 257 | 957 | 26 |
| Owyhee | 568 | 1,990 | 70 |
| Payette | 1,287 | 3,933 | 156 |
| Power | 661 | 1,486 | 42 |
| Shoshone | 1,832 | 2,072 | 135 |
| Teton | 535 | 1,183 | 64 |
| Twin Falls | 4,526 | 11,247 | 1,657 |
| Valley | 975 | 2,148 | 99 |
| Washington | 794 | 2,512 | 92 |
| TOTAL | 110,815 | 258,095 | 12,338 |
| Plurality | 147,280 | ||
| Percentage | 29.1% | 67.7% | 3.2% |