From Politicalwire who got it from NYT:
"If Mr. McCain has had a history of being a happy warrior, that is not the phrase used by many of his friends to describe his demeanor these days. There are few glimpses of the winks, wry smiles and one-liners that were once an integral part of his character. More typically, his remarks are tinged with sarcasm or anger, delivered with a wave of the arm or both hands chopping through the air..."
Sad to see it but with a primary challenge coming in a party which is extremely more conservative, this maverick has a hell of a fight ahead of him.