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. 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. The law, passed by state legislators last year and signed by Kemp, allows certain top elected officials, including the...