HARRISBURG — Pittsburgh's incumbent mayor conceded the Democratic primary election Tuesday to challenger Ed Gainey, who would become the city's first Black chief executive if he wins the general election in November.

Bill Peduto had been seeking a third term against three primary challengers but instead called to congratulate Gainey, a five-term state representative. “Wishing him well,” Peduto tweeted late Tuesday.

Gainey was all but assured a victory in November in the heavily Democratic city. He had consistently made the campaign about equality for Black and poor residents, and accused Peduto of failing to ensure equity in policing, housing and other areas. At one point, he called Pittsburgh “a tale of two cities.”

For Republicans, the top-of-the-ticket race was an open state Supreme Court seat, with three GOP candidates vying for the nomination. The Democratic candidate ran unopposed.

The three Republican candidates in the contested primary were Philadelphia Common Pleas Court Judge Paula Patrick and two Commonwealth Court judges, Kevin Brobson of Cumberland County and Patricia McCullough of Allegheny County.

Brobson was endorsed by the state Republican Party, and has enjoyed a huge advantage in campaign spending, thanks in large part to more than $275,000 in help from a business advocacy organization whose money comes from suburban Philadelphia billionaire Jeffrey Yass. Democrat Maria McLaughlin, a Superior Court judge, ran uncontested for her party's nomination.

The winner of the November election will replace retiring Justice Thomas Saylor, a conservative whose departure will leave the court with one justice elected as a Republican and five elected as Democrats.

A term is 10 years, followed by an up-or-down retention election.

Democrats were picking from among three candidates for an open seat on the Superior Court, which handles criminal and civil appeals from county courts.

The candidates were Philadelphia Common Pleas Court Judge Timika Lane and two lawyers in private practice, Bryan Neft of suburban Pittsburgh and Jill Beck of Pittsburgh.

Republican Megan Sullivan ran unopposed for the nomination.