Assembly Speaker Carl Heastie is expected to endorse Zohran Mamdani for mayor Wednesday, becoming the latest political power player to line up behind the socialist front-runner as he has started to consolidate key Democratic support, according to a source familiar with the matter.

Heastie, one of New York’s most influential Democrats, has since Mamdani’s victory in June’s mayoral primary kept him at arm’s length, refraining from endorsing him.

A number of other top New York Dems, including Gov. Hochul, Senate Minority Leader Chuck Schumer and House Minority Leader Hakeem Jeffries, similarly withheld support from Mamdani for months after his primary win, as some members of the party fretted the 33-year-old Queens Assembly member’s progressive agenda could turn off certain voters.

But

See Full Page