The door is getting wider every day for a third party run by someone on the far right. If a serious candidate emerges (even possibly one from the GOP primaries) it would draw a lot of GOP votes away if Rudy is the nominee.
The Constitution Party always runs someone. Last time it was Judge Roy Moore, who was not a credible candidate. If Brownback or Huckabee were to run, that might be interesting.
Yeah, the second Giuliani's nomination seems inevitable (if he gets that far) there WILL be a third-party run from the religious right. How could there not be? These people have been the holy foot-soldiers of the right for decades and they are not going to watch all their hard work go down with the adulterous, pro-choice, gay friendly, cross-dressing NY `liberal' Rudy Giuliani.
No way in hell.