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

As food costs climb and public trust in private solutions falters, a government-supported grocery model is moving from fringe idea to policy experiment.

Fresh off losing New York’s Democratic primary for mayor to Zohran Mamdani, former Gov. Andrew Cuomo on Monday ramped up his efforts to push the incumbent mayor, Eric Adams, out of the race.