From the "Since you asked…" file.

Sarah Palin ponders...

"Some in the GOP -- it's their last shot. It's their last chance. We will lose faith, and we will be disappointed and disenchanted from them if they start straying from the bedrock principles... if they start straying, then why not a 3rd party?"

Since you asked, no reason at all! Sounds like a great idea! Get started right away!