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

| County | Obama__1 | Obama__2 | McCain__3 | McCain__4 | Others__5 | Others__6 | Total |
|---|---|---|---|---|---|---|---|
| Fulton | 45.1% | 9900 | 53.2% | 11689 | 1.7% | 384 | 21973 |
| Gallia | 35.9% | 4777 | 61.9% | 8247 | 2.2% | 294 | 13318 |
| Geauga | 41.6% | 21250 | 56.9% | 29096 | 1.5% | 756 | 51102 |
| Greene | 40.1% | 33540 | 58.5% | 48936 | 1.3% | 1113 | 83589 |
| Guernsey | 44.0% | 7625 | 53.1% | 9197 | 2.9% | 503 | 17325 |
| Hamilton | 53.0% | 224644 | 46.0% | 195107 | 1.0% | 4334 | 424085 |
| Hancock | 37.6% | 13870 | 60.8% | 22420 | 1.6% | 591 | 36881 |
| Hardin | 38.2% | 5013 | 59.1% | 7749 | 2.7% | 352 | 13114 |
| Harrison | 47.3% | 3683 | 49.7% | 3872 | 3.0% | 232 | 7787 |
| Henry | 42.6% | 6320 | 55.5% | 8239 | 1.9% | 281 | 14840 |
| Highland | 35.7% | 6857 | 62.1% | 11908 | 2.2% | 423 | 19188 |
| Hocking | 48.3% | 6231 | 49.1% | 6326 | 2.6% | 338 | 12895 |
| Holmes | 28.3% | 3141 | 69.5% | 7720 | 2.3% | 252 | 11113 |