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 |
|---|---|---|---|---|---|---|---|
| Adams | 36.6% | 4170 | 60.7% | 6914 | 2.7% | 304 | 11388 |
| Allen | 38.8% | 19521 | 59.6% | 29941 | 1.6% | 801 | 50263 |
| Ashland | 37.0% | 9300 | 60.2% | 15158 | 2.8% | 710 | 25168 |
| Ashtabula | 55.8% | 25027 | 42.2% | 18949 | 2.0% | 898 | 44874 |
| Athens | 66.6% | 20722 | 31.3% | 9742 | 2.0% | 634 | 31098 |
| Auglaize | 28.6% | 6727 | 69.8% | 16395 | 1.5% | 364 | 23486 |
| Belmont | 50.3% | 16302 | 47.6% | 15422 | 2.1% | 687 | 32411 |
| Brown | 37.3% | 7503 | 60.6% | 12192 | 2.1% | 418 | 20113 |
| Butler | 38.0% | 66030 | 60.6% | 105340 | 1.4% | 2406 | 173776 |
| Carroll | 46.0% | 6423 | 50.9% | 7097 | 3.1% | 433 | 13953 |
| Champaign | 39.1% | 7385 | 59.0% | 11141 | 1.9% | 361 | 18887 |
| Clark | 47.9% | 31958 | 50.4% | 33634 | 1.8% | 1178 | 66770 |