Clean campaign vowed BRNEXT to continue ad plan By SCOTT DYER Advocate staff writer Mayor-President Bobby Simpson, a Republican, and state Sen. Kip Holden, D-Baton Rouge, are pledging to steer clear of negative campaigning as they battle in the upcoming runoff election. Simpson, however, said he has little hope the race will stay positive because a political action committee called BRNEXT plans to continue its attacks against him. "As long as BRNEXT stays in this race, it (a positive campaign) probably won't happen," Simpson said. Simpson said he expects BRNEXT to continue its "anybody but Bobby" campaign through the Nov....