Corey O'Connor derailed Mayor Ed Gainey's hopes for a second term with a promise to move the city forward. Only hours after his victory, O'Connor was up and about, working the lunchtime crowd at the Sheraden senior center,

The outcome is the latest in a string of losses in deep-blue cities that has raised questions about the power of progressive officeholders.

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.