Incumbent Ed Gainey and challenger Corey O'Connor were on the ballot in Pittsburgh's Democratic primary for mayor.

Corey O'Connor derailed Mayor Ed Gainey's hopes for a second term with a promise to move the city forward. Only hours after ...

Challenger Corey O’Connor ousted Pittsburgh Mayor Ed Gainey in Tuesday’s Democratic primary election, beating an incumbent in ...

Pittsburgh Mayoral Candidate Corey O’Connor took to the streets to thank voters for his victory in the Democratic primary.

Corey O'Connor's victory in Pittsburgh's Democratic primary marks a significant shift in the city's political landscape, with ...

Allegheny County Controller Corey O’Connor has beaten Pittsburgh Mayor Ed Gainey and will now run to be the city's next mayor ...

Corey O'Connor defeats Pittsburgh Mayor Ed Gainey in Democratic primary that hinged on housing and public safety.

In the pouring rain, O'Connor paid tribute to what his father, Bob, did 20 years ago after he won his own election.

UPDATE 10:05 p.m.: Corey O’Connor wins the Democratic primary for Pittsburgh mayor, according to the Associated Press. UPDATE ...

Corey O'Connor wins the Democratic mayoral primary in Pittsburgh and carries a "Thank You" sign through the streets.