My uncle the libertarian secular humanist says he’s unlikely to vote for Romney because he’s a devout Mormon.
I agree—Romney’s biggest problem isn’t that he’s Mormon, but that he is devout. Most people in the US who claim to be religious do not actually follow the tenets of their faith. I like to call them Kennedy Catholics (as opposed to Mel Gibson Catholics) or Bill Clinton Baptists.
It really threatens people’s lackadaisical feel-good approach to religion when somebody comes along who actually lives their faith.