Three candidates endorsed by New York State Assemblymember Zohran Mamdani defeated Democratic incumbents in U.S. House primaries held Tuesday in New York City districts. The winners include Darializa Avila Chevalier, who defeated a five-term representative, and at least one other challenger who ousted the chair of the Congressional Hispanic Caucus. Former DNC chair Jaime Harrison posted a statement urging those who oppose the party to avoid seeking its nomination.