The “establishment” is against him right now.
There is NO WAY you can deny that right now.
I haven’t heard Rove, Perrino et. al. talking down Gingrich. I did see the Rove/Bush gang support Hutchison over Perry for Governor last year. Saying that the former Speaker of the House, who still has his office on the same street as all the lobbysists, is not an establishment guy is ludicrous. Why do you suppose his office is on K street in DC? It is a curious location choice for somebody who does not have much use for the establishment.