It has been four long weeks since the last Republican debate. Wednesday's debate was a battle between two men — Rick Santorum and Mitt Romney — who are neck-to-neck in the race for the presidential nomination. How did Rick Santorum fare under duress in the 20th debate of the GOP contest? Can Mitt get his momentum back? Ron Christie, Takeaway contributor and Republican political strategist, reviews the winners and losers of the last GOP debate.