Obama airs 30 minute ad

CITY AND DATE In a 30-minute TV ad he bought on three networks and cable at a cost of more than $4 million, Obama said Wednesday night that with the election just six days away voters had a chance to change their nation's course.

Standing before an adoring crowd in Sunrise, Fla., Obama ended the commercial by saying if his supporters do their jobs, "I promise you we will not just win Florida, we will win this election."

The Obama campaign bought time on CBS, NBC and Fox for $1 million per network. The spot was a mix of pre-recorded Obama, pre-recorded voters and a live appearance from the campaign trail by the candidate.