That is the risk for me, of course. If he wins WITH your vote, and you wish for conservative governance, then you will have marginalized yourself because you will support any candidate based on the initial after their name. That is YOUR risk.
You do what you want Einstein, but if McCain wins without the extreme right by attracting more independent and right leaning dem votes every conservative politician is going to take that cue. The GOP will move even farther to the middle and you and you’re “principled” demagraphic will be left out in the cold looking in for decades to come and all of us will be paying for that.