I'm wondering what he means by 'betrayed its principles,' there are many possible senses in which that would be true ranging from picking John McCain at all (I would agree with that), to reluctantly permitting the financial sector bailout to pass (certainly politically inescapable in the context in which it happened, economic necessity is an issue on which reasonable minds can differ, but if he thinks giving in on that was a primary cause for the election loss he is thinking like just another Beltway fiscal-only conservative), or if he means the entire Big Government party the GOP became with Bush and his TSA, HLS, NCLB etc. spending sprees (with which I'd have to agree).