Gingrich supporters believe that Gingrich really has turned away from his big government progressive ways because he says he has. On the contrary, they refuse to believe Romney has sincerely changed his ways when he says he has. For me, I don't believe either of them and don't consider either of them conservative.
Gingrich is 1000000000000000 times more conservative than Romney, and anyone who says otherwise is either lying or uninformed.