All three congressional candidates that New York City Mayor Zohran Mamadani endorsed won their primaries on Tuesday. The races were widely viewed as a test of just how much influence the left would have in charting the next chapter for the Democratic Party — and a referendum on Mamdani’s power.

“Mamdani is the one variable that truly matters,” Michael Lange, political writer and elections analyst of The Narrative Wars Substack, tells The Intercept Briefing as he breaks down the wins of Claire Valdez, Brad Lander, and Darializa Avila Chevalier by district. “You pair that type of broad cultural political figure with the block-by-block organizing of New York City DSA — it’s a very powerful thing.”

“You had a candidate who said ‘Fuck Kamala Harris’ win the historic capital of Black America,” says Lange, of Avila Chevalier’s win over five-term incumbent Rep. Adriano Espaillat. “If that is not a distillation of the ‘Democratic tea party,’ I don’t quite know what is.”

This week on the podcast, host Akela Lacy speaks to Lange and Intercept managing editor Maia Hibbett about the strategic mistakes of the traditionally progressive Working Families Party, the growing influence of the Democratic Socialists of America on the Democratic Party, and how the DSA is upending electoral politics from the left.