Socialist Sweep in New York Gives Republicans New 2026 Midterm Target

Democratic Socialists scored a major victory in New York City’s congressional primaries, handing Republicans fresh ammunition as they fight to hold their narrow House majority in the 2026 midterm elections.

Fresh off his mayoral primary victory, Democratic Socialist Zohran Mamdani helped allies Brad Lander, Claire Valdez and Darializa Avila Chevalier defeat more establishment Democrats in safely Democratic districts. All three are heavily favored to win in November and join Congress next year.

Avila Chevalier’s victory has drawn the most attention because of her activism at Columbia University. She co-founded Columbia University Apartheid and Divest (CUAD) and was active in Students for Justice in Palestine. Critics point to statements associated with those organizations following the October 7, 2023, Hamas attack on Israel, arguing they crossed from criticism of Israel into praise of Hamas leaders. Supporters dispute that characterization, saying the movement advocates for Palestinian rights and social justice.

Lander’s defeat of incumbent Rep. Daniel Goldman was widely viewed as another sign of the progressive wing’s growing influence within the Democratic Party, particularly over U.S. policy toward Israel.

The victories also come as national polling suggests socialism remains a difficult sell outside deep-blue districts. A late-May TIPP Insights survey found socialism has a net favorability rating of -11% nationwide, including +14% among Democrats, -17% among independents and -32% among Republicans.

Those numbers give Republicans a potential opening to nationalize the House elections by tying Democratic candidates in competitive districts to New York’s democratic socialist movement. Democrats, meanwhile, argue the victories reflect strong voter support for candidates focused on housing affordability, labor rights and economic inequality.

Whether New York’s socialist surge signals the Democratic Party’s future—or becomes a liability in swing districts—will be one of the key political storylines heading into November.

Sources: New York City Board of Elections; Jewish Insider; Josh Kraushaar; Reason; TIPP Insights national poll (May 2026); publicly available campaign statements and election results.