I also think the base is getting nervous about who is left and so will not tear into Santorum (as everyone else has been -- vetted) on those points, but Obama will.
I still believe the best one left running is Newt. And he can take it to Obama (as I've been told so often).
I’m inclined to agree with you. (!!!)
Newt would have to be something of a Clintonian proposition to voters: he’s a rogue, but he seems to have some real competences and there’s hope that he’ll do well for the economy. That may be the best we have this year.