Wisconsin
Requirements
Be at least 18 years old.
Live at your current residence for at least 10 days.
Register to vote.
https://www.wisconsinvote.org/faq
Voter Registration Forms
Absentee Ballot: Mail form to your municipal clerk as described here
Election Info
ID Required: Yes
Same-Day Registration: Yes
Deadlines
New Voter Registration: October 14 (You can also simultaneously register and vote in person at a polling place on Election Day)
Absentee Ballot request
Request for Postal Ballot October 29
Ballots must be received by November 3 and signed by a witness