On September 16, the city of Tucson filed a lawsuit in state court, arguing that the State Constitution permits the city to decide for itself whether it wishes to use partisan or non-partisan elections. The Tucson City Charter calls for partisan elections, and the voters approved it and later voted down attempts to repeal it. However, earlier this year, the state passed a law requiring all cities to use non-partisan elections. The case is City of Tucson v State, Pima Co. Superior Court, C2009-7207.