They probably have no idea what a Mormon is. They probably think it's an Amish guy wearing a straw hat and holding a pitchfork.
Hey, if voters can elect a practicing Muslim after 9/11, they can definitely vote for a Mormon.
They elected a member of the MMM, er Nation of Islamic Supremacists, er Nation of Islam; a group that has been denounced as a Hate Group by the Southern Poverty Law Center.