The decision by Ms. Ramos, a state senator from Queens, is at odds with her frequent criticism of Andrew M. Cuomo, including comments questioning his “mental acuity.”

Cuomo’s bid for New York City mayor got a jolt of momentum when Jessica Ramos, who spent months torching Cuomo’s character, endorsed him.

Leaders of the major voting bloc in Brooklyn said Cuomo ‘is the strongest advocate for the community’s values and the needs of New York City’