David Alfred Perdue, Jr. (born December 10, 1949) is an American politician who is the junior United States Senator from Georgia, having been elected to the seat previously held by Senator Saxby Chambliss who retired. Perdue won the most votes in the Republican primary election in Georgia on May 20, 2014, and defeated Representative Jack Kingston in the runoff on July 22, 2014. Perdue defeated Democratic nominee Michelle Nunn on November 4, 2014, and took office on January 3, 2015.