I think she'd be a slam dunk as a VP.
Not with McCain.
She'd be a has been.
If fact, I'd be willing to bet that she'd outpoll McCain in the primaries, if you'd give me 2:1.
McCain is not loved by the base.
It would be the obvious choice. It probably would not be wise to run her as President, but she sure does bring stature, likeability, and gravitas to a ticket.