| probability | electoral | popular | |
| Reality | 1 | 332 | 50.79 |
| 2008 | 1 | 365 | 53 |
| Nate Silver | 0.909 | 313 | 50.8 |
| Drew Linzer | 0.99 | 332 | NA |
| Simon Jackman | 0.914 | 332 | 50.8 |
| DeSart | 0.8862 | 303 | 51.37 |
| Margin of Error | 0.68 | 303 | 51.5 |
| Wang & Ferguson | 1 | 303 | 51.1 |
| Intrade | 0.658 | 291 | 50.75 |
| Josh Putnam | NA | 332 | NA |
| Unskewed Polls | NA | 263 | 48.88 |