Kathryn Garcia, Democratic candidate for New York City Mayor, carries flowers as she campaigns in the Brooklyn borough in New York, U.S., June 18, 2021.

Maya Wiley, Democratic candidate for New York City Mayor and former Secretary of Housing and Urban Development Julian Castro arrive for a campaign event in New York City, U.S., June 18, 2021.

Eric Adams, Democratic candidate for New York City Mayor, speaks to media as he is joined by a coalition of first responders supporting his campaign at a get-out-the-vote rally in the Brooklyn borough of New York City, New York, U.S., June 21, 2021.

Posters for Democratic candidate for New York City Mayor Maya Wiley hang on a light pole outside the Brooklyn Museum voting station in New York City, U.S., June 22, 2021.

Shaun Donovan, Democratic candidate for New York City Mayor, arrives at the Democratic primary debate in New York City, U.S., June 16, 2021.

Eric Adams, Democratic candidate for New York City Mayor, jokes with media as he is joined by a coalition of first responders supporting his campaign at a get-out-the-vote rally in the Brooklyn borough of New York City, New York, U.S., June 21, 2021.

Andrew Yang and Kathryn Garcia, Democratic candidates for New York City Mayor, speak during a campaign appearance in New York City, U.S., June 19, 2021.

People line up to cast their votes during the New York City primary mayoral election, at Frank McCourt High School, in New York City, U.S., June 22, 2021.

People react after polls close and early results are shown during the New York City primary mayoral election in New York City, U.S., June 22, 2021.

Democratic candidate for New York City Mayor Kathryn Garcia celebrates after speaking at her primary election night rally in Brooklyn in New York City, New York, U.S. June 22, 2021.

People stand in privacy booths as they fill ballots at PS 250 during the New York City primary mayoral election in Brooklyn, New York City, U.S., June 22, 2021.

Andrew Yang, Democratic candidate for New York City Mayor, arrives at the Democratic primary debate in New York City, U.S., June 16, 2021.

People wait to check in for voting in the New York Primary election at the Brooklyn Museum voting station in New York City, U.S., June 22, 2021.

Democratic candidate for New York City Mayor Maya Wiley is seen at her primary election night rally in Brooklyn in New York City, New York, U.S. June 22, 2021.

Maya Wiley, Democratic candidate for New York City Mayor, greets City Council candidate Crystal Hudson during a campaign appearance in Brooklyn, New York, U.S., June 15, 2021.

Eric Adams, Brooklyn Borough president and Democratic candidate for New York City Mayor, reacts as he speaks to supporters and the media after voting in the Primary Election in the Brooklyn borough of New York City, New York, U.S., June 22, 2021.

Eric Adams, Brooklyn Borough president and Democratic candidate for New York City Mayor, speaks to supporters and the media after voting in the Primary Election in the Brooklyn borough of New York City, New York, U.S., June 22, 2021.

Eric Adams speaks at a New York City primary mayoral election night party in New York City, U.S., June 22, 2021.

U.S. Representative Alexandria Ocasio-Cortez (D-NY) speaks with New York City Public Advocate Jumaane Williams during a rally to promote voting the first day of early voting for the New York Primary election at Astoria park in Queens, New York, U.S., June 12, 2021.

Maya Wiley, Democratic candidate for New York City Mayor, is embraced by supporters following a campaign event in New York City, U.S., June 18, 2021.

Eric Adams, Democratic candidate for New York City Mayor, speaks to supporters after participating in the Democratic primary debate in New York City, U.S., June 16, 2021.

Eric Adams, Brooklyn Borough president and Democratic candidate for New York City Mayor, fills out his ballot with his son Jordan for the Primary Election in the Brooklyn borough of New York City, New York, U.S., June 22, 2021.

Andrew Yang, Democratic candidate for New York City Mayor, holds a campaign poster during a campaign appearance in New York City, U.S., June 19, 2021.