An appellate court ruling says the state can't make Phoenix and Tucson to move their municipal elections to even-numbered years.
The ruling issued Monday by the state Court of Appeals upholds a trial judge's ruling that the 2012 law improperly intrudes on the constitutional authority of charter cities.
The state had appealed a 2013 ruling by Judge James Marner of Pima County Superior Court.
Phoenix and Tucson had backing in their appeal from the cities of Tempe and Douglas.
Supporters of the law argued that requiring the cities to hold their city elections the same years as elections for presidential and governor would increase voter turnout and could save money.
City officials said the state was meddling and that the law could require them extend some officials' terms of office.