 | Delaware will also elect a United States Senator. If the election for United States Senator were today, would you vote for ... (choices rotated) Republican Christine O'Donnell? Or Democrat Joe Biden? |
| TRACK POINTS | 09/24/08 | 10/29/08 | n/a | n/a | n/a | n/a | n/a | n/a | n/a |
| ± 3.6% | ± 3.7% | n/a | n/a | n/a | n/a | n/a | n/a | n/a |
| ALL | ALL | n/a | n/a | n/a | n/a | n/a | n/a | n/a |
| Christine O'Donnell (R) | 32% | 32% | n/a | n/a | n/a | n/a | n/a | n/a | n/a |
| Joe Biden (D) | 64% | 66% | n/a | n/a | n/a | n/a | n/a | n/a | n/a |
| Undecided | 4% | 2% | n/a | n/a | n/a | n/a | n/a | n/a | n/a |
| Total | 100% | 100% | n/a | n/a | n/a | n/a | n/a | n/a | n/a |