| Counties | Number Ballots Cast | Absentee Ballots Cast | % Absentee of Total Ballots Cast |
|---|---|---|---|
| Ada | 192,303 | 61,857 | 32.2% |
| Adams | 1,917 | 420 | 21.9% |
| Bannock | 29,444 | 8,068 | 27.4% |
| Bear Lake | 2,193 | 201 | 9.2% |
| Benewah | 3,943 | 670 | 17.0% |
| Bingham | 13,443 | 1,270 | 9.4% |
| Blaine | 10,586 | 5,139 | 48.5% |
| Boise | 3,514 | 708 | 20.1% |
| Bonner | 18,853 | 4,962 | 26.3% |
| Bonneville | 35,718 | 7,624 | 21.3% |
| Boundary | 4,334 | 1,306 | 30.1% |
| Butte | 1,048 | 125 | 11.9% |
| Camas | 544 | 98 | 18.0% |
| Canyon | 64,247 | 13,924 | 21.7% |
| Caribou | 2,290 | 261 | 11.4% |
| Cassia | 6,244 | 890 | 14.3% |
| Clark | 259 | 43 | 16.6% |
| Clearwater | 3,232 | 484 | 15.0% |
| Custer | 2,183 | 500 | 22.9% |
| Elmore | 7,098 | 1,520 | 21.4% |
| Franklin | 3,903 | 293 | 7.5% |
| Fremont | 4,832 | 628 | 13.0% |
| Gem | 7,216 | 1,821 | 25.2% |
| Gooding | 4,469 | 942 | 21.1% |
| Idaho | 7,130 | 1,607 | 22.5% |
| Jefferson | 8,877 | 1,161 | 13.1% |
| Jerome | 5,498 | 1,200 | 21.8% |
| Kootenai | 57,232 | 17,311 | 30.2% |
| Latah | 16,174 | 4,714 | 29.1% |
| Lemhi | 3,505 | 1,070 | 30.5% |
| Lewis | 1,409 | 158 | 11.2% |
| Lincoln | 1,496 | 322 | 21.5% |
| Madison | 8,923 | 1,136 | 12.7% |
| Minidoka | 5,220 | 840 | 16.1% |
| Nez Perce | 14,681 | 3,349 | 22.8% |
| Oneida | 1,554 | 205 | 13.2% |
| Owyhee | 3,478 | 400 | 11.5% |
| Payette | 7,678 | 1,667 | 21.7% |
| Power | 2,224 | 415 | 18.7% |
| Shoshone | 4,344 | 586 | 13.5% |
| Teton | 5,111 | 2,393 | 46.8% |
| Twin Falls | 24,888 | 6,845 | 27.5% |
| Valley | 5,265 | 1,812 | 34.4% |
| Washington | 4,036 | 885 | 21.9% |
| TOTAL | 612,536 | 161,830 | 26.4% |