Manhattan Democratic Assemblyman Harvey Epstein on Thursday endorsed Cynthia Nixon’s bid against Gov. Andrew Cuomo for the Democratic nomination for governor in the Sept. 13 primary.

Epstein is the third lawmaker in the state Assembly to back Nixon over Cuomo, joining Democratic lawmakers Andrew Hevesi and Tom Abinanti.

“I am proud to endorse Cynthia because I believe she is truly committed to fighting for a more just and equal New York,” Epstein said. “Together, we will work to advance issues of social and economic justice so that every citizen has a chance to thrive. From reforming our criminal justice system that disproportionately targets low-income people of color, to fixing the MTA and making public transportation more efficient and accessible, I believe that Cynthia will be an excellent ally in this work.”

Nixon in turn backed Epstein’s re-election as well.

“I’m thrilled to receive the endorsement of Assembly Member Harvey Epstein and proud to stand with him in the fight to make New York a state for the many,” she said. “As we’ve seen all across the country, when bold progressives stand together and fight back, we can bring about real change. I look forward to working with Harvey to fix our subways, rein in Cuomo’s housing crisis, and usher in a new era of progressive leadership in New York on Thursday, September 13th.”