The Green Party is not a ballot-qualified party in Wisconsin. This month, the party successfully placed Sharyl McFarland on the November ballot as a candidate for Secretary of State, and if she gets 1% of the vote, the party will become ballot-qualified again.
The Constitution Party and the Libertarian Party are ballot-qualified in Wisconsin. They each nominate by primary, and candidates for statewide office get on the primary ballot with petitions of 2,000 voters. Any registered voter may sign these primary petitions. The Constitution Party has placed Andrew Zuelke on the party’s primary ballot for Treasurer, and the Libertarian Party has placed Neil Harmon on the Libertarian primary ballot for Secretary of State. They will each win their own party’s primary for those offices by default, and will appear on the November ballot. Each of them also needs to get 1% of the vote in order to preserve their party’s qualified status.