by Patrick Appel
PPP's polling suggests that Santorum could do very well tonight. Douthat doubts it will matter:
Because the voters of South Carolina gave Gingrich the crucial first crack at Romney, Santorum’s moment is almost certainly coming round too late.
Dan Amira is equally skeptical:
Tonight could give Santorum a huge boost in his quest to be Romney's leading Non-Threatening Yet Extremely Annoying Opponent.
More on the Santorum surge here.
The Dish 