Many Americans believe a lot of dumb, crazy, destructive, provably wrong stuff. Lately this is especially (though not exclusively) true of Donald Trump voters, according to a new survey.

The survey, from the Economist/YouGov, was conducted in mid-December, and it finds that willingness to believe a given conspiracy theory is (surprise!) strongly related to whether that conspiracy theory supports one’s political preferences.

Remember Pizzagate? That’s the bizarre theory that Hillary Clinton was helping run a child sex slave ring out of a D.C. pizza joint, as allegedly proven by code words in hacked Democratic emails.