Senator John Fetterman of Pennsylvania is already facing his first Democratic primary challenger for 2028. Ahmed Moor, a 42-year-old Gaza-born writer and member of the Democratic Socialists of America, announced his candidacy Monday and filed with the Federal Election Commission.

Moor was born in the Rafah refugee camp. His family moved to Philadelphia when he was a child; they later lived for a time in Ramallah before returning to the United States. He graduated from the University of Pennsylvania and earned a master’s in public policy from Harvard as a Paul and Daisy Soros Fellow. He co-edited the 2012 book After Zionism: One State for Israel and Palestine and is a fellow at the Foundation for Middle East Peace. He joined the local DSA chapter after the October 7, 2023, attacks.

His campaign platform is explicitly progressive. He is running on what he calls a “Dignity Agenda” of Medicare for All, free childcare, and more affordable housing, paid for in part by higher taxes on the wealthy and a proposed nationwide billionaire wealth tax. Moor also has a history of hostility for Fetterman, repeatedly calling him "mentally impaired" and claiming he is controlled by Jewish interests.

He also wants to end U.S. involvement in the Iran war and abolish ICE. However, the sharpest contrast with Fetterman is on Israel and Palestine. Moor supports ending U.S. military aid and imposing sanctions modeled on those used against apartheid South Africa, adding that they "need a Nuremberg."

He has long favored a one-state solution, saying "I don’t believe in a Jewish state" and describing a two-state solution "a non-starter." Moor has also written that Americans are “deeply implicated in Israeli apartheid.” In a 2023 Guardian conversation, he described a reaction to the October 7 attacks as feeling that “the natives have broken free – good for them,” while anticipating a heavy Israeli response. He also defended Hamas, a designated terrorist organization by the United States and multiple other countries, calling the idea that the group was "evil" an example of "magical thinking." In the same conversation, he described the organization as "speaking out for Palestinian rights in a way that [the Palestinian president] Mahmoud Abbas hasn’t in a long time." In a June essay, he encouraged anti-Zionist Israelis to engage in civil disobedience and sabotage military vehicles.

Moor has acknowledged the race will be an uphill fight. He is a first-time candidate with limited statewide name recognition and an unproven fundraising operation. Additionally, other Democrats with more established profiles are widely expected to enter or consider the race, including Rep. Chris Deluzio, progressive Rep. Summer Lee, former Rep. Conor Lamb, and state Rep. Malcolm Kenyatta. Early speculation and prediction markets have treated established elected officials as the leading contenders if they jump in.

However, Moor’s early start, DSA ties, and sharp contrast with Fetterman could still allow him to consolidate some part of the progressive base. If the field is as crowded as many believe, Moor's campaign may have the opportunity to shape the race and force other candidates to address those issues on his heels. On the other hand, Moor's attacks against Democratic Party leaders, including Hakeem Jeffries and Chuck Schumer, is not likely to find him any institutional support in the race.

Moor has hired Rasha Mubarak, who previously worked on finance for Reps. Rashida Tlaib and Cori Bush, and plans to campaign across all 67 Pennsylvania counties. A launch event for his campaign is scheduled in Philadelphia next week.

Fetterman has not yet publicly commented on whether he will seek a second term. He has faced growing frustration from his own party over his strong support for Israel, occasional alignment with Republicans, and other breaks with Democratic orthodoxy that has bucked party leadership. Recent polling has shown him far more popular with Pennsylvania Republicans than with Democrats. The senator's fellow Pennsylvanian Democrat, Gov. Josh Shapiro, has previously said a robust primary challenge against Fetterman seems likely.