NEW YORK — City Mayor Eric Adams on Thursday formally received support for his reelection bid from several unions representing employees of the police and correction departments unions, who expressed concern a City Hall led by Democratic nominee Zohran Mamdani would be a “de Blasio 2.

Mr. Adams, who was elected on a law-and-order campaign message, is seeking to portray Zohran Mamdani, this year’s Democratic nominee, as weak on crime.

The Police Benevolent Association, the city’s largest police union representing rank-and-file NYPD officers, has not announced whom it will endorse.