The New York Times reports: * Mayor Zohran Mamdani’s three main endorsed candidates won Democratic congressional primaries in New York City. * Brad Lander defeated incumbent Daniel Goldman by roughly 30 points. * Claire Valdez won an open Brooklyn–Queens seat. * Darializa Avila Chevalier narrowly defeated incumbent Adriano Espaillat. * The candidates shared Mamdani’s progressive economic agenda and opposed continued U.S. support for Israel. * The results could double the number of socialists in Congress from two to four. * Mamdani’s intervention angered Democratic leaders, unions and former allies, but established him as a powerful New York political kingmaker. * The Times cautions that these victories occurred in districts where Mamdani was already popular, so they do not necessarily prove wider national appeal.