The board shall be composed of the mayor of the City of Milledgeville and six additional members, one of which shall be elected from each of the six municipal voting districts of the City of Milledgeville, all as provided in the consent decree entered May 12, 1989, in Civil Action No. 88-262-1-MAC, United States District Court, Middle District of Georgia, Macon Division, entitled Louise N._Barnes_v._James_E._Baugh_et_al. Each member of the board now serving shall continue to serve until his or her successor is duly elected and qualified.