Zohran Mamdani, the Democratic candidate for mayor of New York City, appeared with Senator Elizabeth Warren to highlight his plan for free universal child care.

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.