Romney would be the worst of the lot along with a couple of the minor players. Newt or Perry would both be a huge improvement.
If Romney. Perry, Wrong Paul, or Huntsman are the Republican nominee I vote write in or third party again - Not negotiable.
Newt I might could hold my nose for but it would be hard.
Santorum and Bachmann are far from perfect, but either is okay.
I think we could wind up with a brokered convention, and then who knows?