The super-delegates are controlled by the party poobahs. They will NEVER turn to Gingrich and Gingrich himself knows it. He is unelectable. Period. Scoring 6%, 5% of own’s own primary votes is not re-assuring. Besides as everyone knows he has baggage that will sink a fleet of cruise ships. Primary contests do matter. There will not be a brokered convention. It’s gonna be Santorum or Romney, and unless Santorum can pull of a WI win, his momentum is sapped and Romney it will be.
If Santo wins WI, it will only increase the possibility for a brokered convention, which is why Newt is staying in. Mainly, if Newt drops out, he will lose a possible nomination during a Brokered Convention, according to my understanding of how a BC works.
Honestly, I don't see how Newt can stay in much longer. His votes are already heading over to Romney, which the polls indicate. Ron Paul is also a big if in the coming weeks. And most of his votes will not go anywhere. They will just quit altogether.