Peter Wehner has an excellent article in Commentary where he explains why the "Establishment" does not like Newt Gingrich.
The bottom line: it isn't because Gingrich is a true conservative and they want a moderate like Romney; Gingrich's problem is not that he is "too extreme," in the sense of being too conservative. His problem is that he is too undisciplined, too mercurial, and simply not likeable.
Thanx and a tip o' the hat to Lawrence Auster.
That is all.