Depends on their religion.
I'll suffer quietly throught the administration of a vitriolic Buddhist. I'd be quite alarmed about the vitriolic Islamic fundamentalist. And between those two extremes would lie a motley crew of various levels of concern.
Do Mormons scare me much? Nah. I could live here otherwise without being scared of my neighbors. And on the plus side, I would expect cigarette and alcohol taxes to go through the roof to pay for more of those falling bridges MA is complaining about.
Heck, a Mormon presidency sounds better and better already!
;-)