Zohran Mamdani clinched victory Tuesday in the Democratic primary for mayor of New York, cementing an upset that already has shaken national politics.

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?

Zohran Mamdani's New York mayoral primary prompted a variety of reactions among the city's Democrats, with some vowing to oppose him and others offering support.