Political Horror

hi there, dont want to get political here - but given the "unstable" political climate the world is in right now, and all of this - truly - frightning me, i was wondering if there are some good horror books with a political theme to it?

like something bentley little would do, a political party taking over, but they are pure evil, or a young man getting into politics and making a deal with the devil..

seems like politics are a breeding ground for truly evil stuff, so i was wondering if you have some recommendations. thank you and take care!