The Indiana Court of Appeals has struck down the state's voter ID law, saying it violates the state Constitution.
The court ruled 3-0 Thursday that the law must be declared void because it regulates voters in a way that is not "uniform and impartial." The judges say the ID law treats in-person voters and mail-in voters differently.
The League of Women Voters challenged the law on state constitutional grounds after the U.S. Supreme Court had upheld it.
The Indiana law was passed in 2005 by a Republican-controlled legislature, requiring voters to show government-issued photo identification.
Democrats and civil rights groups called it a thinly veiled effort to discourage groups of voters who tend to prefer Democrats. Supporters say the law is needed to prevent vote fraud at the polls.