There is a lot of opinions in this thread in answer to the thread question. I'll just add this to the mix because I saw it happen today that a known apologist for Jihadist issues got a "Thank You For This Useful Post" by an Ultra-Conservative because the apologist used an issue of particular appeal when discussing the Amnesty deal.
So, I'd say that there is some possibility, no matter how small it might be, that some of the Ultra Conservatives bash him beyond all reason and they tear into him as though he was the Devil.
I believe this is the result of alien influences.
But in this case the sign might read, "F*** McCain!!"