I think Mitt’s big problem is, before SC everyone thought he was the best to beat Obama, the safest. I think soon as they saw Newt in the debates they realized NEWT had a better chance to beat Obama because he can articulate conservatism and that Romney has as much baggage as Newt if you really look. They all do.
I agree, and I predict a 6-8% win for Gingrich, notwithstanding the vastly over-rated evangelical endorsement of Santorum. Evangelicals are not robots who vote based solely on what they hear from the pulpit. They are real, ordinary people like all of us, with minds of their own. And those who are motivated to vote are fired up by Gingrich's bulldog debate performances.
Also, Newt is from neighboring Georgia, while Mitt is a Yankee lib, and Santorum is from someplace called Indiana. That will count in the voting.