986 of 986 precincts reporting
The state's unofficial totals. Winners aren't marked here.
44 counties: Phil McGrane has the most votes in 42, Shawn Keenan has the most votes in 2. The figures for each county are from the same file and add up to the statewide totals.
| County | Phil McGrane | Shawn Keenan | Votes |
| Ada County | 59.3% | 40.7% | 222,743 |
| Adams County | 78.7% | 21.3% | 2,126 |
| Bannock County | 56.2% | 43.8% | 31,404 |
| Bear Lake County | 86.1% | 13.9% | 2,390 |
| Benewah County | 79.5% | 20.5% | 3,966 |
| Bingham County | 75.5% | 24.5% | 15,074 |
| Blaine County | 35.4% | 64.6% | 11,357 |
| Boise County | 78.4% | 21.6% | 3,936 |
| Bonner County | 72.5% | 27.5% | 23,087 |
| Bonneville County | 68.1% | 31.9% | 41,620 |
| Boundary County | 82.5% | 17.5% | 5,485 |
| Butte County | 84.2% | 15.8% | 1,115 |
| Camas County | 78.8% | 21.2% | 533 |
| Canyon County | 70.3% | 29.7% | 76,430 |
| Caribou County | 84.5% | 15.5% | 2,470 |
| Cassia County | 80.3% | 19.7% | 6,777 |
| Clark County | 78.9% | 21.1% | 256 |
| Clearwater County | 80.0% | 20.0% | 3,184 |
| Custer County | 78.0% | 22.0% | 1,991 |
| Elmore County | 71.3% | 28.7% | 7,419 |
| Franklin County | 86.5% | 13.5% | 4,630 |
| Fremont County | 82.2% | 17.8% | 4,813 |
| Gem County | 83.6% | 16.4% | 8,055 |
| Gooding County | 76.4% | 23.6% | 4,293 |
| Idaho County | 83.7% | 16.3% | 7,709 |
| Jefferson County | 84.1% | 15.9% | 11,384 |
| Jerome County | 70.5% | 29.5% | 6,070 |
| Kootenai County | 75.4% | 24.6% | 72,738 |
| Latah County | 54.4% | 45.6% | 17,482 |
| Lemhi County | 75.0% | 25.0% | 3,753 |
| Lewis County | 84.5% | 15.5% | 1,436 |
| Lincoln County | 74.4% | 25.6% | 1,383 |
| Madison County | 81.0% | 19.0% | 11,272 |
| Minidoka County | 74.6% | 25.4% | 5,945 |
| Nez Perce County | 67.1% | 32.9% | 14,854 |
| Oneida County | 88.2% | 11.8% | 1,604 |
| Owyhee County | 80.9% | 19.1% | 3,560 |
| Payette County | 80.6% | 19.4% | 8,645 |
| Power County | 68.2% | 31.8% | 2,444 |
| Shoshone County | 69.6% | 30.4% | 4,504 |
| Teton County | 42.1% | 57.9% | 5,981 |
| Twin Falls County | 71.9% | 28.1% | 27,251 |
| Valley County | 63.7% | 36.3% | 6,029 |
| Washington County | 82.5% | 17.5% | 4,311 |
The share with the most votes in each place is in bold. That's the count, not a result.