I'd also call it a draw.
But [link|http://www.cbsnews.com/stories/2004/09/08/politics/main641817.shtml|http://www.cbsnews.c.../main641817.shtml] says that of 178 undecided voters, 41% thought that Edwards won, and 28% thought that Cheney won. The rest called it a draw. That'd be an Edwards victory in the only audience that matters. An online poll (yeah, I know the problems) at [link|http://www.msnbc.msn.com/id/3036697/|http://www.msnbc.msn.com/id/3036697/] also calls it an Edwards victory (at the moment 59% to 41%).
One amusing point: Cheney did a better job of defending Bush's policies than Bush did. Not totally surprising since they're actually mostly Cheney's policies...
Cheers,
Ben