One small follow up

As a follow up to the last post, I'm kind of curious about the following equation:

Largely disagree with Bush + Largely don't know/understand Kerry's positions = Vote for Bush?

This American Life had a great piece right before the election on something like this... you do not agree with a given candidate on nearly everything, but at least you know where he stands, so you vote for the one you understand. Love to understand this more...
D