It sounds to me like he has higher ambitions...
By Mass standards, I'm sure that he'd make a great Senator. I mean, Kennedy can't stay there forever, can he? Winning an open seat would probably be more likely than beating Kerry should he lose to Bush in Nov considering how Kerry was able to come back and beat Gov Weld back in 1996.
He surprised me too and he I didn't care for him too much initially.
I can tell you he drives the democrats here crazy. Especially his staunch opposition to gay marriage.
It is refreshing to have someone like him here in Massachusetts. He is a breath of fresh air IMO.