Chris Christie is pretty popular among Tea Party Conservatives. He actually was the winner of the Virginia Tea Party Convention Straw Poll. He insists (quite fiercely) that he will not even consider running. There are issues with him on the social side of the issues. He is a typical northern republican, well not quite typical as he is a take charge fiscal conservative.
Below are some outside chances that may throw their hats in the ring.
Here is some commentary on the so called contenders.
The Stupid Party and Impeachment Talk...
6 minutes ago