National Democrats are grappling with how much to embrace Assemblyman Zohran Mamdani, a leftist who has become the party’s standard-bearer in America’s largest city.

Marc Filippino Zohran Mamdani is the self-described democratic socialist who shocked New York. He won the city’s Democratic party primary election for mayor at the end of June, and he’s got it all. Snappy social video with biting attacks on his scandal-ridden rivals . . .