For New York City mayoral elections, you usually start seeing meaningful results on election night, but the final outcome can take days or even weeks because of ranked‑choice voting and late‑arriving ballots.

Key timing basics

  • Polls in NYC close at 9 p.m. Eastern, and initial unofficial vote totals (first‑choice counts from machines and already‑processed early/mail ballots) are typically released that night.
  • These election‑night numbers can show who is ahead, but they are not final and can shift as more mail, absentee, affidavit, and military ballots are processed.

Ranked‑choice delays

  • NYC uses ranked‑choice voting in primaries and some special elections, which means if no candidate passes 50% of first‑choice votes, officials must run elimination “rounds” redistributing lower‑finishing candidates’ ballots.
  • The Board of Elections usually begins these ranked‑choice tabulations about one week after Election Day and then releases updated preliminary rounds about once a week until certification.

When you actually know the winner

  • If one candidate clears 50% of first‑choice votes, the race can effectively be called on election night or soon after, once enough ballots are counted to make a comeback mathematically impossible.
  • In closer races that require multiple ranked‑choice rounds and include lots of mail and provisional ballots, the certified result can take several weeks; in a recent mayoral primary using ranked choice, certification took nearly a month.

Practical takeaway for “when results come in”

  • Expect: first wave of unofficial results shortly after 9 p.m. on election night, often updated through late evening.
  • Expect: a clearer picture within about a week, when the first ranked‑choice tabulation and more mail/absentee ballots are included, with final certified results potentially several weeks later in a very tight race.

Information gathered from public forums or data available on the internet and portrayed here.