I just think voting 3rd party is futile because if you can't force change within the Republican Party by voting in more Conservative candidates starting some "new party" is already doomed to fail because you have already proven that you don't have the votes.
But I don't want to reward the Repubs for signing away the sovereignty of my country. I am much more loyal to my country than I am to any ploitical party....I know, I'm working on it.