A change in vote based on the attractiveness of the female candidate.
Dude, I thought about voting for Obama, but did you see that VP debate? Palin has got my schwing vote locked up, I could definitely stare at her for the next 4 years.
The voters who will cross party lines to vote for the hottest candidate.
Dude- Did you see Susan Palin on the tv last night? Total MILF, I'm voting for her.
Guy- I thought you were a Democrat?
Dude- I'm a part of the schwing vote.