“Mayor Zohran Mamdani and his allies swept a series of congressional primaries in New York City on Tuesday in a remarkable show of strength for the insurgent left that sent shock waves through the Democratic Party,” the New York Times reports.“Mr. Mamdani’s candidates toppled a pair of incumbents backed by the city’s political establishment, including major labor unions and the House Democratic leader. Another candidate backed by the mayor won an open House seat, and a handful of democratic socialist challengers he supported were winning down the ballot.”“For months, Mr. Mamdani threw himself and his energized political organization into the three marquee congressional contests, campaigning late into the night in the race’s final days and calling the election a referendum on the direction of the party.”