For progressive Jews in New York City, the presence on the ballot of one of their own in June’s mayoral primary offered a moment of great excitement.

Brad Lander galvanized many progressive Jewish leaders, and polls found that he outperformed among Jewish voters, drawing about 20% of their first-choice votes on the ranked ballots, compared to 11% of voters citywide.

Lander cross-endorsed Zohran Mamdani, the primary winner, before that vote, and he has since campaigned heavily for the democratic socialist who is leading in all polls. So it might seem self-evident that his Jewish voters would all be backing Mamdani without hesitation. But some of them say they are doing so with misgivings or not doing so at all, in a sign of how fraught the election has been for Jewish voters who are turne

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