A national poll of likely voters out on the eve of the election gives Barack Obama a 9-point lead over John McCain.
The Marist Poll found 53 percent of those surveyed backing Obama, while 44 percent said they support McCain. Last week, the same poll gave Obama a 7-percent lead.
More than half of registered Republicans respondents say they made up their minds before the conventions, while slightly less half of Democrats said they did.
Fifteen percent of Republicans surveyed said the vice presidential selections was the biggest factor in their decision.
For Democrats, 17 percent say the debates cemented their votes.