“looking at the old santorum is a little like looking at the old newt. “
I don’t see a similarity in this hemisphere myself.
Not in the sense of similarity of conduct, but I mean the principle. You can only tell so much about Newt, and the same goes for Santorum, by looking at stuff that’s years and years old. You have to look also at trends and at significant events (such as Newt’s voluntary re-churching).