More than just trying to knock off moderates, the mayor is building a base of power.

By

David Freedlander,

a features writer covering New York and national politics

Zohran Mamdani was scheduled to show up to campaign with Brad Lander across the once punk-rock, now ultra-privileged, precincts around Tompkins Square Park one Sunday last month. But the mayor was missing, waylaid by other commitments, so Lander, the former city comptroller who ran against Mamdani before providing him with a crucial endorsement, knocked on doors alone in his bid to unseat Representative Dan Goldman.