"Don't call GOP voters stupid."
I've known a lot of GOP voters from my ex-family, of course.
When it comes to everyday things, sure they aren't stupid. When it comes to daily life activities, their jobs, etc., they're not stupid. Mostly.
When it comes to actually understanding other human beings, the impact of their own actions upon themselves, and a host of other topics relating to things of a sociological nature?
They're quite often as dumb as a box of bricks.