The U.S. Supreme Court has set October 1, the first day of the new court season, to hear Washington v Washington Republican Party, no. 06-730. This is the case over whether states may use “top-two” primaries in conjunction with party labels on ballots. A “top-two” primary is very common for non-partisan elections around the U.S. Every voter gets the same primary ballot, and that ballot lists all candidates. A run-off between the top two vote-getters is then held.
Washington state law says that this type of primary should be used for all elections, except presidential elections. The Democratic, Republican and Libertarian Parties sued shortly after this law was passed in 2004. The parties argue that if Washington state is going to use this type of primary, it must leave party labels off the ballot. The U.S. District Court, and the 9th circuit, agreed with the political parties.