Although people often talk about how "this thing could be over by NH", Only a fraction of delegates are being decided in all the contests before Super Tuesday.
I think that January and February will winnow the field down to Romney, Paul and one conservative (probably Perry or Gingrich). And even if that conservative hasn't won any races until that point, they will still ahve a chance because there are still 80-90% of the delegates still up for grabs
Rudy, is that you?
This, basically. No one "wins" the primaries after the first few smallish states, but the field has been vetted and the lay of of the land is pretty clear at that point. This is why I think it was a bad idea for Huntsman to skip IA, and why Romney should not have flip-flopped (oh, the irony) on campaigning in IA.