Why would Florida go for Mitty, but Ohio for Santorum?
The idea is that voters are faced with two GOP tickets. Both are economically conservative, but Mitty is socially liberal while Santorum is conservative. That means that red states like Ohio and Iowa- more traditionalist and religious- would go for Santorum, while red states like Florida and Nevada (which are more libertarian) would go for Mitty.
Also, every blue state would go for Mitty based on his social views (he'd be a perfect match for Vermont).
