Associated Press: Supreme Court hears case on Ohio voter roll purge effort
In a case from Ohio, opponents of the practice called it a violation of a federal law that was intended to increase the ranks of registered voters. Justice Sonia Sotomayor said minorities and homeless people appear to be disproportionately kicked off the rolls.
Paul Smith, representing civil rights groups at the Supreme Court, said most people who receive notices from the state never return them. "The evidence we have in the record is that most people throw it in the wastebasket," Smith said.
The state learns nothing about whether someone actually has moved if a notice is not returned, he said.