"This is the end of daylight savings time tonight," Biden said at the campaign event. "It's Mitt Romney's favorite time of the year because he gets to turn the clock back.

"Man, I'm so ready to win this election," he added.

Biden was speaking in Arvada at the first of two Colorado stops on Saturday. The Arvada Fire Department said the crowd totaled about 900 people for the rally, according to the White House pool report.