If Pawlenty is in your top two, you should narrow it back to Romney. Pawlenty is for increasing fees (named taxes in most situations) wherever he has to to make himself look good, and he'll take money from any successful program and put it in another one to balance everything out.
Make no mistake, Tim Pawlenty is a hard guy to pinpoint on anything. And he is for citizens purchasing drugs from foreign countries, state organizations negotiating drug and healthcare prices (not much different from national government, if he gets there, believe me).
Pawlenty is an interesting cat. But I assure you his track record here in Minnesota will give you cause for pause in the long run. He has to play along with the democratic majority to stay in power, believe me, in Minnesota.