HARRISBURG, Pa. — State Representative Chris Rabb faced steep odds in his bid for the Democratic congressional nomination in Philadelphia, with the political establishment firmly aligned against him.
The mayor and Philadelphia’s Democratic Party organization had thrown their support behind a different candidate in this week’s primary contest. Pennsylvania’s congressional delegation also backed another contender. One of Rabb’s opponents had millions in financial backing, while another benefited from extensive voter mobilization efforts led by powerful local construction trade unions.
Despite these challenges, Rabb secured victory by a commanding 15-point margin over his nearest rival in Tuesday’s contest. The state lawmaker appears headed to Congress since no Republican candidate filed for the GOP nomination.
A coalition of progressive organizations powered Rabb’s campaign, with his strategy focusing partly on criticizing his own party for prioritizing wealthy contributors over ordinary voters. He attributed his success to a grassroots coalition inspired by New York City Mayor Zohran Mamdani, concerned about Republican President Donald Trump, and seeking more responsive governance.
“That was at the heart of why I was running and that is what I built my campaign around and that, I believe, is a chord we struck in this electorate that showed up and came out like gangbusters,” Rabb said in an interview with The Associated Press.
Progressive activists view Rabb’s triumph as among their most significant victories this year and another indication that Democratic voters perceive party leadership as ineffective against Trump. Progressive candidates are also seeking House positions in New York, California and Michigan, either challenging sitting Democratic lawmakers or targeting vulnerable Republicans.
The 55-year-old Rabb describes himself as a Democratic socialist and “proud troublemaker” who consistently championed progressive legislation during his five terms in the state House. His supporters believe voters delivered a clear message this week.
“They want someone who knows what they stand for and is ready to fight, whether it’s fighting Donald Trump now or fighting an economy and political system rigged for billionaires in years ahead,” said Adam Green, a co-founder of the Progressive Change Campaign Committee.
The success of progressive candidates in midterm contests has raised concerns among moderate Democrats that far-left nominees might alienate centrist voters and waste a politically favorable opportunity to defeat Republicans, regain congressional control, and obstruct Trump’s agenda during his final two years in office.
Mike Mikus, a Pittsburgh-based Democratic strategist, said progressives could pose challenges for the Democratic Party in the future, but not during this election cycle.
“Regardless of who we nominate, gas prices are still too high, grocery prices are too high and people generally think the economy is not in a good place,” Mikus said. “And voters will vote for change.”
The Working Families Party served as perhaps Rabb’s most significant backer, an organization that argues both Democratic and Republican establishments have compromised with powerful interests. The group has supported several congressional members, with Analilia Mejía becoming their latest success after winning a New Jersey special election on April 16.
Rabb remains uncertain about what awaits him in Washington. “Will we have a razor-thin majority? Will we be in a razor-thin minority?”
He views Congress as an institution where most members avoid bold action due to financial influences in politics. During his victory address, Rabb displayed the passion that progressive supporters say resonated with voters.
“I have been critiqued along this campaign for being too radical, too bold,” Rabb told the crowd. “They ain’t seen nothing yet.”
Rabb’s policy positions on many campaign topics did not differ substantially from his opponents’, including supporting Trump’s impeachment, eliminating U.S. Immigration and Customs Enforcement, implementing a data center moratorium, and advocating for “Medicare for All.”
He distinguished himself by emphasizing support for government-operated grocery stores to eliminate “food deserts” and comprehensive minimum wage legislation that would end lower tipped wages and include independent contractors like gig workers.
Most significantly, Rabb mounted fierce criticism of establishment politics, including within his own party.
He argued that people are frustrated with insider politicians and big-money politics, leading to poor voter participation even with Trump in office and strong opposition to “MAGA extremism and corporate greed,” referencing Trump’s “Make America Great Again” movement.
“We can learn lessons from this victory because, if establishment politics was as effective and productive as people would have us think, then I would have been blown out of the water,” Rabb said.
State senator and former state party chair Sharif Street placed second on Tuesday. U.S. Sen. Cory Booker of New Jersey and Philadelphia Mayor Cherelle Parker supported his campaign, while building trades unions contributed over $600,000.
Dr. Ala Stanford finished third, receiving endorsement from retiring incumbent Dwight Evans and $3.5 million in expenditures from 314 Action, a left-leaning political action committee focused on electing scientists to Congress.
The state’s leading Democrat, Gov. Josh Shapiro, remained neutral in the race but called to congratulate Rabb following the election.
Allied progressive organizations provided at least $1.8 million in spending support for Rabb, according to federal campaign records. U.S. Rep. Alexandria Ocasio-Cortez, D-N.Y., campaigned for him four days before the primary.
Supporters celebrated his victory over the city party’s “machine.”
“The fact that Chris was able to win in machine territory is significant and should send a shock wave to the Democratic establishment that base voters are upset and want transformational change,” said Joseph Geevarghese, executive director of Our Revolution, which was founded by U.S. Sen. Bernie Sanders, I-Vt.
While progressive organizations are gaining influence in Philadelphia, some Democrats noted that Rabb won just 45% of votes, suggesting a unified establishment candidate might have succeeded. Others pointed to low turnout, with fewer than one-third of registered Democrats participating.
“Momentum, the vibes, how people feel about a candidate are going to make a difference,” said Mustafa Rashed, a Democratic political consultant in Philadelphia.
Rabb revealed he nearly abandoned the race and considered withdrawing after discovering his campaign treasurer had stolen funds.
The sense of betrayal, combined with being financially outmatched by rivals, made him question whether his candidacy could survive.
“There was a lot of internal talk about what is the path forward for me,” Rabb said. “I had to dig down and just reaffirm that I’m walking in my purpose and this is exactly what I’m supposed to be doing, irrespective of the adversities.”
