The 9th district covers most of the central part of Harlem in Manhattan. Incumbent Democrat Bill Perkins ran for reelection. He is currently behind challenger Kristin Richardson Jordan, a member of the Democratic Socialists of America, by 104 votes in the final RCV round. Due to the close margin, the race underwent a manual recount. On August 9, 2021, Perkins conceded the race to Jordan. The recount was completed on August 18, with Jordan winning by 114 votes.
