That's actually easier. Locusts do less harm than RINOs.
To your McCain question, I'd possibly vote for Captain Strawberries, if for no other reason than that he got behind the GOP and campaigned for Bush in 2000. Loyalty isn't to be taken lightly. He's such a loose cannon, though, that I'd wait until election day before deciding to hold my nose and do it.
What I won't do is tell the RNC that they own my vote.