My guess of a list of potential others willing to speak up:

Glenn Reynolds
Roger Simon
Michael Totten
Zombie
Dean Esmay
Fabius Maximus
Ace of Spades
Stephen Green
Dan Riehl
Eric Scheie
Abe Greenwald

I could come up with a lot more with a bit more time invested…

(though its hard to call anyone on this list “conservative” — and that might be the problem, no?)

BTW - I’d like to see Michelle Malkin take a public stand one way or the other…