I respectfully disagree. My experience is that people want to say they voted/bought/cheered/etc for the winner.
I am a Native New Yorker, and it pains me to think what has happened to that State. I now live In California, so unfortunately for me, I'm two for two.
Needless to say, my Faith in the Electorate is at a very low ebb. I hope this Election, and the General Election in 2012, will bring my Faith back to Reagan era levels.