Pittsburgh Mayor Ed Gainey, who had allied himself with progressives, has lost a Democratic primary challenge, The Associated Press reported. The AP called the race for Alleghany County Controller Corey O'Connor at 10:05 p.

Challenger Corey O’Connor ousted Pittsburgh Mayor Ed Gainey in Tuesday’s Democratic primary election, beating an incumbent in a race that hinged on how Gainey was handling city finances, affordable housing and public safety.

Pennsylvania voters head to the polls on May 20 to vote in the state's primary election, including voting for Pittsburgh mayor.