New York City Mayor Zohran Mamdani has made significant inroads into national Democratic politics, with three congressional candidates he endorsed securing victories in Tuesday's primaries against the party establishment. The wins for Brad Lander, Claire Valdez, and Darializa Avila Chevalier are seen as a testament to Mamdani's political influence and a demonstration of the growing power of progressive factions within the party.
Darializa Avila Chevalier secured a notable victory in New York's 13th congressional district, defeating five-term incumbent Rep. Adriano Espaillat. Avila Chevalier, a member of the Democratic Socialists of America (DSA), whose platform includes opposition to deportations and a critique of the prison system, benefited from her strong stance on Palestinian causes and criticism of Israel's actions in Gaza. Espaillat, a long-serving Latino politician, had emphasized his establishment credentials, but the conflict in Gaza mobilized voters against him.
In the 10th congressional district, former New York City Comptroller Brad Lander defeated two-term Rep. Daniel Goldman. Lander, who had previously allied with Mamdani during their mayoral campaigns, condemned Israel's actions in Gaza, a position that resonated with a significant portion of the Democratic base. Goldman, who served as lead counsel for the first impeachment of President Trump, saw his strong support for Israel become a political liability.
Claire Valdez, a DSA activist and current New York State Assembly member, won an open seat primary in the 7th congressional district. She was backed by Mamdani over the preferred candidate of retiring Rep. Nydia Velázquez, Brooklyn Borough President Antonio Reynoso. While both candidates criticized Israel's actions in Gaza, Valdez argued for an earlier condemnation. Mamdani's endorsement was crucial in propelling Valdez past Reynoso, who had garnered support from labor unions and the Working Families Party.
Mamdani featured all three winning candidates in a "basketball ad" that aired during the New York Knicks' playoff run, presenting them as his "team." The success of these candidates suggests that traditional Democratic party machines may face increasing challenges from movements like the DSA. The outcomes also highlight a potential vulnerability for Democratic candidates who maintain strong support for Israel, as a growing segment of the party base expresses deep concern over the conflict in Gaza.
Given the heavily Democratic nature of these districts, Lander, Valdez, and Avila Chevalier are widely expected to win their general elections in November. Their potential arrival in Washington would significantly increase the number of progressive voices in the House of Representatives and solidify Mamdani's influence in both New York and national politics.