Three Baltimore City Council candidates maintained their narrow Election Day leads after the first round of late-arriving mail ballots were counted Thursday. The outcomes of these races — which include two incumbents fighting to hang on — will help determine the makeup of the next council. It’s possible that Mayor Brandon Scott, who declared victory in his reelection run Tuesday night, will end the week with even more council allies in addition to a friend in the likely new City Council president, Zeke Cohen.