He's not my favorite, but I actually like the guy, and would definitely give him a vote if it came down to it. I was happy to get the chance to see him in Charleston during the primary, even though I didn't vote for him.
The polls show that people continue to move forward on social issues that Santorum is still pretty radical on; I can't imagine he would win unless the economy was really in trouble. I certainly don't think he could carry PA.
Santorum does not have radically different social views than other Republicans, he just likes to talk about them more.