Direct answer: As of today, announcements about the NYC mayoral winner come on Election Night or shortly after polls close, with results typically available quickly for clear margins and often taking longer if the race is close or absentee ballots require processing. In 2025, preliminary results were expected late on Election Day (November 4, 2025) and full results could take hours or a day or more if the contest is tight. If you’re asking about when a specific candidate will be declared, that depends on vote totals and when the NYC Board of Elections releases tallies; outlets usually project a winner within hours after polls close if the margin is decisive. For the most current status, check live updates from the NYC Board of Elections and reputable news outlets.