The emergence of Zohran Mamdani, a democratic socialist, is likely to divide national Democrats, who are already torn about what the party should stand for.

The emergence of Zohran Mamdani, a democratic socialist, is likely to divide national Democrats, who are already torn about what the party should stand for.

Mamdani won in parts of the city people wouldn’t normally expect. Democrats should pay attention to his positive message and laser focus on costs.