Ideology has nothing to do with this. It's about electoral votes. If Hillary is the Democratic nominee, Giuliani would probably be a better choice because he'd secure Pennsylvania better than anyone else. In addition to providing badly needed executive experience.
But the Democrats will probably choose Obama, in which case I agree McCain should name Crist as his running mate.
The other thing is if Crist takes FL off the table that means the Campign can put more money in other states.
I guess it depends. Conservatives do not like Crist best I can tell. Being in Florida I will vote dem before i vote mccain/crist. they are democrats. of course i quit being a republican. Crist being president is scarier than obama. Gee, talk about experience, he has been governor barely a year.