This is real simple. Sarah Palin doesn’t need these debates to get her message out. She can get on TV anytime she wants. No sense exposing herself to inane questions by the media and loser contenders looking to gang up on her.
Exactly right. She's holding trump cards that the others just don't possess. They have to be part of the bloody demolition derby that's playing out. She doesn't, and is very smart to steer clear until there's a clear advantage to be gained by officially declaring.