“We helped elect Mulgrew, and now we feel like Mulgrew sort of stabbed us in the back,” said Moshe Spern, the leader of United Jewish Teachers. Moshe Spern thought Michael Mulgrew would listen to him.

While some prominent New York Democrats look to stop Zohran Mamdani’s momentum, the Manhattan Democrats became the first county committee in the city Monday night to endorse Mamdani in the general ...