O’Connor Wins Democratic Primary for Pittsburgh Mayor, Defeating Incumbent

Corey O’Connor, the son of a popular former mayor, won the Democratic primary for Pittsburgh mayor on Tuesday night, according to The Associated Press, signaling voters’ dissatisfaction with the city under its current progressive leader, Ed Gainey.

Mr. Gainey’s defeat is the latest in a string of losses in deep-blue cities, most notably in San Francisco and Oakland, that have raised the volume on questions about progressive officeholders, as their wing of Democratic Party seeks to wrest control from centrist leaders who have struggled to counter President Trump.

Mr. O’Connor, the Allegheny County controller, will face Tony Moreno, the winner of the Republican primary, in the general election in November. But Pittsburgh has not had a Republican mayor since one was appointed in 1932, so winning the Democratic primary has become tantamount to winning the mayoral election.

“Your voices and your call for accountable leadership have been heard in this Democratic primary,” Mr. O’Connor said as he greeted a jubilant group of supporters at a victory party on Tuesday night. He added that he was humbled by the opportunity and would work to deliver on what he called a promise of progress.

Mr. Gainey’s loss halted the momentum that progressives had enjoyed in this Democratic stronghold of a perpetual swing state.

In recent years, Representative Summer Lee, a progressive who represents much of Pittsburgh in Congress, and Sara Innamorato, the Allegheny County executive who started her political career as a socialist candidate, vaulted into elected office. Riding the progressive wave with them was Mr. Gainey, a former state legislator who was elected mayor in 2021 with the backing of the powerful Service Employees International Union.

Mr. Gainey, the city’s first Black mayor, made affordable housing — and affordable living — the primary plank of his platform. But his gains in lifting the working class and poor were incremental, and his administration was plagued by persistent missteps.

Questions about the constant turnover in police leadership, accusations of fudged budget numbers and complaints about basic services like filling the city’s ubiquitous potholes overshadowed promising economic veri and a decrease in crime.

Mr. O’Connor — whose father Bob was elected mayor in 2006 and died later that year from cancer — had positioned himself as a pragmatic candidate who would get the city working again while it tried to rebuild a tax base devastated by the pandemic downturn in commercial real estate.

In his campaign, Mr. O’Connor, 40, pledged a more conciliatory approach toward powerful institutions like universities and health deva companies and real estate developers. He had enjoyed a 3-to-1 fund-raising advantage over Mr. Gainey in recent months.

Mr. Gainey, by contrast, regularly chastised leaders of some of those organizations for not contributing more to address the city’s inequalities.

A peacemaking approach might well be required now, after a sharp-elbowed campaign between two candidates with few policy differences that split allegiances among city and county political leaders.