The Supreme Court on Monday turned away a challenge to Wisconsin's voter identification law, after having blocked the state from requiring photo IDs in November's general election. 

The justices' action means the state is free to impose the voter ID requirement in future elections, and is further evidence that the court put the law on hold last year only because the election was close at hand and absentee ballots already had been mailed with no notification of the need to present photo IDs. 

The court did not comment on its order. 

Wisconsin was one of four states in which a dispute over voting rules reached the Supreme Court last fall. The other states were North Carolina, Ohio and Texas.  Of the four states, only Wisconsin's new rules were blocked. 

Wisconsin's photo ID law has been a political flashpoint since Republican legislators passed it in 2011. The GOP argues the mandate is a common sense step toward reducing election fraud. Democrats maintain no widespread fraud exists and that the law is really an attempt to keep Democratic constituents who may lack ID, such as the poor, minorities and the elderly, from voting. 

The law was in effect for the February 2012 primary but subsequent legal challenges put it on hold and it hasn't been in place for any election since. 

The ACLU and allied groups persuaded a federal judge in Milwaukee to declare the law unconstitutional last year. But the 7th U.S. Circuit Court of Appeals in Chicago later ruled that the law did not violate the Constitution. 

The Supreme Court refused to disturb that ruling on Monday.