A federal judge has thrown out a lawsuit launched by Arizona Republicans claiming that the state is violating federal law by failing to clean up the state’s voter registration list, saying there is no legal grounds to sue.

A federal judge has tossed out a claim by the head of the Arizona Republican Party and two GOP allies that there are at least 500,000 -- and possibly 1.27 million -- people on voter registration rolls who shouldn't be there.

A federal judge found that the plaintiffs — led by Arizona Republican Party Chair Gina Swoboda — don’t have standing to challenge Arizona’s voter roll maintenance because they haven’t demonstrated any harm.