A new Yahoo/YouGov survey finds that about twice as many U.S. adults say they would vote for a candidate with Mamdani’s platform (50%) than say they would not (26%). Could it be a blueprint for Democrats elsewhere?

Mr. Mamdani’s victory upended city politics and reverberated nationally. He relied on a memorable message, charisma and a strong ground game.

The 33-year-old democratic socialist won New York City's Democratic primary in a stunning upset of former governor Andrew Cuomo.