[JohnnyZ]

Brownback, Pawlenty, Allen

Allen is obviously not ideal, but he passes the threshold of acceptability, unlike out-and-out liberals like Romney, Rudy, et al.

[Gipper08]

"Brownback,"
Immigration makes him a non starter.
Voted for NCLB and Medicare
etc

"Pawlenty"
He is not a movement conservative and does not have the support of conservatives in his own state.
He is too pro-big education
Broke his no new tax pledge
etc