Imagining that Bachmann wins IA, and Romney then wins NH.
What goes down in NV and SC?
Doesn't matter. Unless something bizarre (other than magic long johns) happens in the Romney camp he wins the nomination. Slice it dice it any way you want. The inevitable conclusion is Romney is the nominee. Huntsman is the ONLY sane horse in the Republican field and he'll never poll above the single digits.
I think being sane might actually be a disadvantage in the Republican primary. I bet Bachmann will win in this scenario.