The national spotlight will focus on City Hall Tuesday, as Chance The Rapper is set to hold a 10 a.m. news conference “regarding the Chicago mayoral election.” The 44th Ward race is now wide open, with state contribution limits lifted after a massive contribution by one of Ald. Tom Tunney’s challengers. The City Council’s Public Safety Committee is set to meet Tuesday to consider re-appointing three members of the Chicago Police Board, less than a week after the board cleared an officer of wrongdoing in a 2012 fatal shooting.