New York City Mayor Zohran Mamdani's progressive coalition is about to send three allies to Congress. Claire Valdez, Brad Lander, and Darializa Avila Chevalier each won their Democratic primaries in June, and their heavily blue districts make Tuesday's midterm elections a formality. The real question is no longer whether they'll arrive in Washington but what they'll do when they get there. The three share a platform that reads like a progressive wish list: abolish ICE, end US military aid to Israel, pass Medicare for All, enact national rent control. Lander, the former NYC comptroller who lost the 2025 mayoral primary to Mamdani before backing him, defeated incumbent Dan Goldman in a race defined almost entirely by Israel-Palestine. He calls Gaza a genocide and the occupation apartheid while also identifying as a Zionist who supports a two-state solution — a position that will be tested immediately in Congress. Israeli forces detained him in the occupied West Bank two weeks before the election while he was volunteering with olive harvesters, and Israel subsequently revoked his travel documents. Avila Chevalier, who unseated longtime Congressman Adriano Espaillat, arrived at Palestinian advocacy through a 2014 internship in Nablus and built her campaign around a "Babies Not Bombs" platform that would redirect military spending to childcare and healthcare. Valdez, a DSA member and former union organiser who won the race to succeed retiring Congresswoman Nydia Velazquez, anchors her politics in the labour movement and wants to pass the PRO Act to make union organising easier. Both Valdez and Avila Chevalier had DSA backing. The strategic challenge is obvious. Progressive political strategist Nomiki Konst frames it plainly: find an issue the caucus agrees on and leverage it early while Democrats may hold congressional power. Lander's proposed starting point is modest by design — banning members of Congress from trading individual stocks. He also sees restoring enhanced government insurance subsidies that expired at the end of 2025 as an achievable fight that forces Republicans to take a visible position. The Alexandria Ocasio-Cortez precedent looms. She entered Congress in 2018 with similar energy after defeating Joe Crowley, and has since found that bipartisan work — like her 2025 credit card interest rate cap bill with Republican Anna Paulina Luna — is sometimes the only path to legislative results. The question for Mamdani's slate is whether they can make that same pragmatic turn without alienating the base that chanted "Abolish ICE" at Kings Theatre. Tensions are already visible. Avila Chevalier called for NYPD Commissioner Jessica Tisch to resign after ICE shot a man in his car while his five-year-old was in the backseat, and said police officers shoved her to the ground during subsequent protests. Tisch was reportedly appointed by Mamdani at the recommendation of Governor Kathy Hochul, whose endorsement of Mamdani's mayoral campaign allegedly hinged on the appointment. That's the kind of intra-coalition friction that multiplies in Washington. The structural reality: these are three new House members entering a body of 435. Abolishing ICE and ending Israel aid require not just Democratic majorities but the kind of supermajorities that don't currently exist. The immediate test is whether they can find legislative footholds — stock trading bans, insurance subsidies, the PRO Act — that deliver tangible results while maintaining credibility with a base that expects transformational change.
