I conservatively estimate my endorsement to count for precisely 0 votes, but I'm going to endorse Fred Thompson.
This is not based on any of his particular views other than his repeated support of stronger Federalism, per my recent posts on the topic.
If I had to sell Federalism to the general public, rather than discussing pragmatics, I'd point out that on average, with stronger states, "everybody wins". Or at least at the state granularity, states hardly being politically homogenous, everyone wins. Californians can go be liberal, Texas can go be conservative, and we can all get on with it. Maybe even learn something about policy by seeing what happens when different people do different things.