Former Gov. Andrew Cuomo has not entered the race for mayor of New York City. But private planning suggests he is laying the groundwork to do so.

Mr. Adams and former Gov. Andrew M. Cuomo have both been popular with Black voters, setting up a potential showdown that could decide the Democratic mayoral primary in New York City.

Five New York City Democrats are competing to become the left-leaning candidate of choice in the June mayoral primary.

The Bay Area politician, known for her antiwar position and breaking barriers in Congress, just left the House after more than two decades.