Voters in the June 21 Democratic primary will choose a nominee for mayor and city council wards 1, 3, 5, 6, chairman and at-large in this deep-blue city, where the primary often determines the winner in November.... Ward 6 council candidate Charles Allen declined to participate.... Mayoral candidate Robert C. White Jr. and Ward 3 council candidate Zachary Parker declined to participate, saying the yes/ no format would not accurately capture their views....