Huntsman and Romney. Obama after that unless Giuliani runs.
Really Duke? As you are a Republican (albeit one of the sanest I know) I can understand Huntsman and Giuliani, but spineless Mitt?
I assume you are hoping he'll campaign as a staunch tea party friendly conservative to win the nomination, but govern as a technocratic moderate? If so, here's food for thought:
If Romney has little enough backbone to even remotely adhere to his moderate and bipartisan ways as governor while he's a candidate, what makes you think he'll act much differently as President when he'll still be under constant pressure from the base?