A "leadership committee" created by Georgia Gov. Brian Kemp under a new state law must stop spending money to get the governor reelected during the Republican primary, a federal judge ruled Monday.

Governor of Georgia Brian Kemp. Photo: flickr/Wikimedia Commons Governor of Georgia Brian Kemp. Photo: flickr/Wikimedia Commons

Former U.S. Sen. David Perdue, who's challenging Kemp in the primary, last month filed a lawsuit challenging the new law. Perdue and his campaign allege that the law gives Kemp a significant and unfair fundraising and spending advantage in the primary and asked the judge to declare it unconstitutional.