Mamdani won the Democratic primary, NBC News projects, and will face the incumbent, Eric Adams, in the general election. Former Gov. Andrew Cuomo may keep running, too.

I was born and raised a Jewish New Yorker. I graduated from New York's Columbia University. I spent my 20s in Manhattan. I loved New York City. But now the unthinkable has happened. A politician with a combination that I'd never thought possible in America is in position to run New York City.