I'm stuck as a "Republican" until the next primary. Ohio automatically registers you with the party of the last primary you participated in and doesn't allow changes or revocations other than choosing a different primary next time.
If I'd known that ahead of time I wouldn't have bothered with my pointless protest vote against Trump in this year's Republican primary. I have never, and will never, voted for a Republican in a general election, but as far as they're concerned I'm a card carrying member that needs to be on every mailing list they can think of.
Trump told them there's a giant faucet that Canada uses to keep water from California. So I'm gonna go with yes, they think there's a switch.