Currently, Wisconsin has four qualified parties: Democratic, Green, Libertarian, and Republican. A party remains on the ballot if it polls 1% for any statewide race in a midterm year. This year, no Green filed for a statewide office in the Green Party primary. Also this year, no Libertarian filed for a statewide office in the Libertarian Party primary except for a candidate for Lieutenant Governor. But because Governor and Lieutenant Governor are elected on a joint ticket in November, the nomination of the Libertarian candidate for Lieutenant Governor, Terry Virgil, is a futile act. The state won’t print him on the November ballot without a gubernatorial running mate.
There are four Libertarians on the Libertarian primary ballot for state legislature, and one for U.S. House. The Greens have one candidate on their own primary ballot for the legislature, Ben Manski.
Independent candidates qualified for the November ballot for U.S. Senate, and for Governor, and for five of the eight U.S. House seats, and for quite a few legislative seats.
For a party to get back on the ballot, or for a new party to qualify, 10,000 signatures are needed. They can only be collected in the first half of an even-numbered year. Or, if an unqualified party runs a statewide candidate who gets 1% of the vote, the unqualified party becomes qualified. Wisconsin will have a U.S. Senate election in 2012, so either the Green Party or the Libertarian Party can regain their status after November 2012 if their U.S. Senate candidate, or their presidential candidate, polls 1% in 2012.