What's the most appropriate measure for gauging decisiveness of a victory in a modern-day presidential election? Popular vote, as I know I thought in 2000? Electoral delegate margin, as the system might lead us to believe? Most swing states captured, as Bill Maher has suggested? The winner's performance in key demographic areas, like Obama's along non-white voters and white women?
Is there any simplistic, objective-ish way to figure the extent to which this win is a mandate? Or does it just not work that way?