Mayor-elect Zohran Mamdani appeared at a Democratic Socialists of America meeting Wednesday night to urge the group to not endorse his onetime campaign surrogate Chi Osse’s 2026 challenge against Brooklyn Congressman Hakeem Jeffries — a sticky situation that spotlights a power struggle unfolding inside the leftist organization.

Mamdani’s appearance at the closed-door evening meeting at Manhattan’s Church of the Village was unusual for several reasons.

Mamdani, a dues-paying DSA member, is in the thick of assembling his administration ahead of his Jan. 1 inauguration and his appearance could be a sign he intends to continue exerting influence over the leftist group’s operations even as mayor.

In addition, his decision to come out against Osse — a prominent ally and City Council membe

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