| Rep. | Rep. | Dem. | |
|---|---|---|---|
| Counties | Mike Crapo | Matt Lambert | Bill Mauk |
| Ada | 21,893 | 2,974 | 4,297 |
| Adams | 791 | 142 | 63 |
| Bannock | 3,751 | 428 | 1,991 |
| Bear Lake | 885 | 145 | 91 |
| Benewah | 391 | 95 | 514 |
| Bingham | 5,349 | 516 | 418 |
| Blaine | 705 | 92 | 556 |
| Boise | 843 | 135 | 103 |
| Bonner | 2,061 | 926 | 1,569 |
| Bonneville | 9,778 | 764 | 763 |
| Boundary | 493 | 203 | 160 |
| Butte | 476 | 77 | 74 |
| Camas | 280 | 42 | 9 |
| Canyon | 9,765 | 1,388 | 1,413 |
| Caribou | 823 | 71 | 67 |
| Cassia | 2,977 | 276 | 196 |
| Clark | 240 | 44 | 21 |
| Clearwater | 410 | 96 | 265 |
| Custer | 645 | 77 | 155 |
| Elmore | 2,264 | 257 | 463 |
| Franklin | 1,486 | 264 | 114 |
| Fremont | 2,241 | 195 | 106 |
| Gem | 2,149 | 357 | 196 |
| Gooding | 1,471 | 175 | 143 |
| Idaho | 2,223 | 663 | 350 |
| Jefferson | 2,714 | 200 | 160 |
| Jerome | 2,036 | 231 | 153 |
| Kootenai | 4,595 | 1,228 | 1,414 |
| Latah | 1,991 | 699 | 1,429 |
| Lemhi | 1,558 | 179 | 114 |
| Lewis | 300 | 94 | 163 |
| Lincoln | 562 | 105 | 57 |
| Madison | 3,554 | 218 | 127 |
| Minidoka | 2,364 | 272 | 251 |
| Nez Perce | 1,426 | 290 | 1,658 |
| Oneida | 374 | 34 | 102 |
| Owyhee | 1,243 | 186 | 111 |
| Payette | 2,074 | 361 | 321 |
| Power | 658 | 84 | 149 |
| Shoshone | 357 | 149 | 1,151 |
| Teton | 836 | 90 | 128 |
| Twin Falls | 5,748 | 572 | 622 |
| Valley | 1,561 | 357 | 115 |
| Washington | 1,864 | 324 | 181 |
| TOTAL | 110,205 | 16,075 | 22,503 |
| Plurality | 94,130 | ||
| Percentage | 87.3% | 12.7% |