My three brother-in-laws will vote again for Trump. Even if he nukes a third world country for the fun of it, they will vote for him.
Two of them are college educated. They're not stupid people and that's the scary fact. I wouldn't go as far as to say they are brainwashed. It's more like they are responsible for trying to brainwash others. They positively, absolutely, genuinely think they are doing the right thing.