Fort Lauderdale’s sometimes nasty election cycle saw political rivals attacking incumbents, railing against overdevelopment, broken sewer pipes and nightmarish gridlock. They promised change. But on Tuesday, three out of the four incumbents declared victory. Dean Trantalis, an attorney elected mayor of Fort Lauderdale six years ago, won a third and final term. Incumbents John Herbst and Steve Glassman won their commission races for the District 1 and 2 seats.