Mayor Bill Peduto conceded the Democratic primary race for the mayoralty to state Rep. Ed Gainey in a tweet at about 10:30 p.m. Tuesday evening. The concession puts Gainey on a glide path to becoming the City’s first Black mayor after the primary upset win against Peduto.

Reverend, doctor, professor, dean of students. John Welch is hoping to add Mayor of Pittsburgh to that résumé as he campaigns to unseat the incumbent, Mayor Bill Peduto, in Tuesday's Democratic primary...