Steve got you, fam! I’ve been registered and actively voting in 3 states since 2020 - currently in a swing state. I was getting over 40 emails and 15 texts every day, plus phone calls each week. Last week I cancelled my registrations in the two former states by snail mail, because that’s apparently the only way they verify your signature.
Pop your info in here to locate and contact the clerk for details on how to “deregister” or cancel your Wisconsin voter registration: https://myvote.wi.gov/en-us/My-Municipal-Clerk