| Rep. | Dem. | |
|---|---|---|
| Counties | C.L. 'Butch' Otter | John Peavey |
| Ada | 47,505 | 47,565 |
| Adams | 981 | 701 |
| Bannock | 11,228 | 15,795 |
| Bear Lake | 1,616 | 809 |
| Benewah | 1,545 | 1,221 |
| Bingham | 6,502 | 6,957 |
| Blaine | 1,782 | 4,832 |
| Boise | 1,331 | 987 |
| Bonner | 5,524 | 5,468 |
| Bonneville | 16,055 | 12,422 |
| Boundary | 1,731 | 1,296 |
| Butte | 634 | 629 |
| Camas | 255 | 231 |
| Canyon | 20,158 | 13,458 |
| Caribou | 1,769 | 1,027 |
| Cassia | 3,997 | 2,510 |
| Clark | 199 | 174 |
| Clearwater | 1,715 | 1,442 |
| Custer | 1,007 | 762 |
| Elmore | 3,356 | 2,162 |
| Franklin | 2,594 | 895 |
| Fremont | 2,430 | 1,968 |
| Gem | 2,947 | 2,449 |
| Gooding | 2,356 | 2,545 |
| Idaho | 3,445 | 2,477 |
| Jefferson | 3,717 | 2,769 |
| Jerome | 2,785 | 2,406 |
| Kootenai | 16,628 | 11,885 |
| Latah | 5,985 | 6,551 |
| Lemhi | 1,892 | 1,188 |
| Lewis | 764 | 804 |
| Lincoln | 641 | 894 |
| Madison | 3,682 | 2,816 |
| Minidoka | 3,349 | 2,873 |
| Nez Perce | 6,751 | 7,053 |
| Oneida | 925 | 575 |
| Owyhee | 1,727 | 1,110 |
| Payette | 3,480 | 2,371 |
| Power | 1,213 | 1,339 |
| Shoshone | 1,945 | 2,898 |
| Teton | 969 | 949 |
| Twin Falls | 9,919 | 9,115 |
| Valley | 1,860 | 1,710 |
| Washington | 2,115 | 1,537 |
| Total | 213,009 | 191,625 |
| Plurality | 21,384 |