Jim DeMint endorsed Mitt Romney
Duncan Hunter endorsed Mike Huckabee
Bush campaigned for Specter.
I see Sarah's endorsement of McCain as nothing more than a big thank-you, that's all. It doesn't make her a RINO nor will it have any bearing on whether or not she runs for President. Besides, McCain is going to lose the primary and Sarah can sit back and said she supported John so...
I like that scenario.
Then, if we can just get Romney, Huckabee and Pawlenty out of the way, we might be able to get some real conservatives on our near-future general election ballots.