Well, I share HalfSigma's enthusiasm for Romney. My ideology is more technocratic than conservative or liberal. Valuing "conservatism" over technocratic competence is a lot like valuing "communism" over technocratic competence -it's stupid.
I'm coming to the belief that a President probably should be a top tier empirical macroeconomist, and then beyond that get good successive administrative experience culminating in being governor of a large population state. For example, Prime Minister Singh of India fits the bill pretty closely. Economic management is the fundamental competence for state leadership, it seems to me.
Until folks like Hubbard and Mankiw can be pushed to run for Governorships, A JD cum laude, MBA Bates Scholar from Harvard Law School represents a significant up-ratchet in technocratic competence for the Republicans and for presidential candidates generally.