| Barack Obama won 13 of the 14 swing states in 2008. And he received a higher percentage of votes in nine of them than he did nationally. |
| State Winner/margin |
| Arizona McCain/53.6%-45.1% |
| Colorado Obama 53.7%-44.7% |
| Florida Obama 51.0%-48.2% |
| Iowa Obama 53.7%-44.2% |
| Michigan Obama 57.4%-41.0% |
| Minnesota Obama 54.1%-43.8% |
| Nevada Obama 55.1%-42.7% |
| New Hampshire Obama 54.4%-44.7% |
| New Mexico Obama 56.9%-41.8% |
| North Carolina Obama 49.7%-49.4% |
| Ohio Obama 51.5%-46.9% |
| Pennsylvania Obama 54.3%-44.0% |
| Virginia Obama 52.6%-46.3% |
| Wisconsin Obama 56.2%-42.3% |
| USA Obama 52.9%-45.7% |