1985 New York City mayoral election

The New York City mayoral election of 1985 occurred on Tuesday, November 5, 1985, with Democratic incumbent Mayor Ed Koch being re-elected to a third term by a landslide margin. Koch received an overwhelming 78.02% of the vote citywide. Koch also swept all five boroughs by landslide margins, breaking 70% of the vote in Manhattan and Queens and breaking 80% of the vote in Brooklyn, the Bronx, and Staten Island. Koch's closest competitor was the Liberal Party nominee, New York City Council President Carol Bellamy, who received 10.20% of the vote. Finishing in a distant third was the Republican nominee, Diane McGrath, who received 9.14% of the vote. Koch was sworn into his third and final term in January 1986. To date, this is the last time a Democrat won Staten Island in a mayoral election, and the last time any mayoral candidate carried all five boroughs.