If you're turning your back on your own party (in this case, what's left of the GOP), and supporting a "Conservative Party" whackadoodle for Congress, if you're going to align yourself with the Palins, the Birthers, the Tenthers and the like, I can safely assume should you be the nominee, Obama can start measuring the curtains for Years 4 through 8.
If the GOP is even halfway serious about unseating President Obama in 2012, the only person left on the radar is Mitt Romney (and even he's a stretch).