I would ONLY be concerned about a third party candidate if that candidate is John McCain, running as an Independent.
As duly noted on my bio page, if Hitlery wins, I shall have to emigrate. If McLame is the candidate, I cannot in any conscience vote for him, nor for Mutt.
Devil and the Deep Blue Sea.
It's a helluva thing for anyone believing in the Constitution to find the only possible candidate to vote for is Giuliani. And that's just barely, and with a very bad taste in one's mouth.
Apparently, the LBM and the globalists have successfully managed to eliminate any possibility of any conservative actually running for President in 2008.