K, I’ll bite who in your opinion is as conservative and electable. (based on past behavior)
Until Fred enters the race, he is, by definition, not electable at all. One needs to be on the ballot.
But, in the spirit of your question: I'm at the stage where I am eliminating primary candidates, not endorsing them. So far, I have eliminated Giuliani, McCain, and Paul, for various reasons. Of those in the race, I like Hunter's record best, and Romney's stated policy ideas best.