United States presidential election in Idaho, 2008 By county By county

| County | Obama__1 | Obama__2 | McCain__3 | McCain__4 |
|---|---|---|---|---|
| Elmore | 31.17% | 2523 | 68.83% | 5571 |
| Franklin | 12.40% | 599 | 87.60% | 4231 |
| Fremont | 18.47% | 1065 | 81.53% | 4700 |
| Gem | 27.94% | 2166 | 72.06% | 5585 |
| Gooding | 28.29% | 1485 | 71.71% | 3764 |
| Idaho | 24.71% | 1935 | 75.29% | 5895 |
| Jefferson | 16.12% | 1641 | 83.88% | 8540 |
| Jerome | 26.81% | 1794 | 73.19% | 4897 |
| Kootenai | 36.56% | 22120 | 63.44% | 38387 |
| Latah | 53.51% | 9191 | 46.49% | 7984 |
| Lemhi | 21.32% | 796 | 78.68% | 2938 |
| Lewis | 27.31% | 479 | 72.69% | 1275 |
| Lincoln | 33.95% | 497 | 66.05% | 967 |
| Madison | 12.75% | 1625 | 87.25% | 11120 |
| Minidoka | 22.24% | 1137 | 77.76% | 3976 |
| Nez Perce | 40.75% | 7123 | 59.25% | 10357 |
| Oneida | 18.10% | 381 | 81.90% | 1724 |
| Owyhee | 23.79% | 944 | 76.21% | 3024 |
| Payette | 28.74% | 2415 | 71.26% | 5988 |
| Power | 36.93% | 1027 | 63.07% | 1754 |