I agree. Ignore them. Why feed their inflated sense of self-worth?
But to prove what you say is true, I find myself asking one of two questions to the "Bush has lost my vote/I will never vote for him again" crowd:
1. So you're not voting for Bush. Anything else?
2. Why should I care who you vote for?
They are never answered.
They should be ignored. I don't know why most don't realize this simple truth.