All three Democratic candidates endorsed by New York City Mayor Zohran Mamdani have won in their respective House primaries in New York. Mamdani was backing Brad Lander, Claire Valdez and Darializa Avila Chevalier. Lander, an Israel critic, had also run for mayor last year before endorsing Mamdani. Valdez is a former union organiser, while Chevalier is a relative newcomer.