Warren became one of the most prominent political figures to show their support for Mamdani, the leading candidate for New York City mayor.

Warren joins Sen. Bernie Sanders (I-Vt.) and Rep. Alexandria Ocasio-Cortez (D-N.Y.) in boosting Mamdani and his message as the way forward for the Democratic Party. Establishment Democrats have applauded Mamdani’s focus on making New York less expensive for working-class families but have been reluctant to publicly support him.