It's funny, another local columnist wrote in Philadelphia magazine last spring that he really thinks Santorum doesn't even want to win this election. He is using it to set himself up as a martyr for conservatism so he can run for President, and meanwhile make some big bucks on the lecture and book circuit so he can support those six kids and put some money away for their college. It was a very funny piece, but the guy may have been on to something. The way Santourm is running this campaign, it's pretty clear he is not going to trim his sails politically or run to the center just to hang on to this Senate seat. He has a longer view of the world, and of his own career.
The other thing to consider is that in 2010, Arlen Specter's Senate seat will be up and Santorum may come back and run for it. By that time, he may be proven to indeed have been the Churchill of our time, and Bobby Casey will certainly prove to be an idiot.
Santorum seems like too good of a politician (and too young) to lose hear and fade away. If he loses, then I wouldn't at all be surprised to see him run for Pres (and maybe become the VP)
glad he's not trimming the sails. This way, win or lose, he's still viable to run for something (or get nominated to a high level cabinet post)