“I am truly sorry that I let you down. But as my grandfather used to say, when you get knocked down, learn the lesson and pick yourself back up and get in the game. And that is what I’m going to do,”...

The Zohran Mamdani victory in the Democratic mayoral primary last month was a big surprise for the New York political class, but it also sent shock waves rattling Democratic leaders coast to coast.

Mamdani leaned in, fielding questions with a mix of what attendees who spoke to Business Insider characterized as "charisma" and pragmatism.