He’s 33 years old, a social media powerhouse, and a likely contender to become the city’s new mayor. Does his victory signal a new path forward for the American left?

First-time voters and young voters turned out in droves for the New York mayoral primary. Their choice for mayor, Zohran Mamdani, may or may not herald a wider tea party-like revolt. But his win serves as a repudiation of the political establishment.