Aren't any of you McCain supporters at all worried that McCain will croak and Palin will lead the free world?

no, there is no evidence. it would be relying on her common sense to surround herself with competent people. and i don't know her well enough to be convinced she'd do that. however, your argument works against both parties. that same lack of evidence hits obama between the eyes as well. the only way we'll know if someone is a good leader is to experience their leadership. obviously by then it's too late.