Former President Barack Obama, the last Democrat to captivate the party’s base, got on the phone. In a lengthy call in June, Mr. Obama congratulated Mr. Mamdani, offered him advice about governing and discussed the importance of giving people hope in a dark time, according to people with knowledge of the conversation.

The New York Times’ Mara Gay reports former President Obama picked up the phone for a “lengthy call” with Zohran Mamdani after his NYC mayoral primary win in June. Christina Greer and Max Rose join to discuss.