Someone who has since been banned was chosen at a caucus as a Santorum delegate to the county level. He was bragging that he was going to vote for Romney. You never know.
Sad to say, of the three candidates, I think Santorum is most likely to lose delegates, because he was not very organized when he had no money and no support.
Then there was the Gingrich campaign co-chair in Tennessee who switched to Santorum on Saturday, and then was elected as a Gingrich delegate. I believe Tennessee is also a “morally bound” state, and I’m betting the guy will vote for Gingrich as he was elected to do, but you never know.