Newt’s margin of gain was mostly related to two things. He was trailing in previous delegate counts, and he was a shoe-in in his old state, one that assigned delegates in a block.
He is not projected to be winning any other states at this point. Because of proportionality he will gain more delegates, but you have to win states to gain on the others.
I may be wrong, but I’ll be quite surprised to see Newt win another state. Yesterday he won one state, his old home state.
He failed to win one other one.
The only poll I can find on Alabama shows Mr. Gingrich in third. Granted, the poll source is questionable, but it might not be wise to count on that boost.