Mamdani-Backed Candidates Oust Two Democratic Incumbents in New York

Democratic Socialist candidates backed by NYC Mayor Mamdani swept three congressional primaries, ousting two sitting incumbents including the Congressional Hispanic Caucus chair -- a significant reshaping of the Democratic Party's ideological direction heading into the 2026 midterms.

The Morning Brief · June 24, 2026 · Based on reporting by Axios

Three left-wing congressional candidates endorsed by New York City Mayor Zohran Mamdani won Democratic primaries Tuesday, defeating two sitting incumbents. Among those defeated was the chair of the Congressional Hispanic Caucus. Brad Lander defeated Rep. Dan Goldman in a race shaped in part by divisions over the Israel-Gaza war.

The results showed Mamdani's growing clout within the Democratic Party following his own mayoral victory. Establishment Democrats described the losses as a significant setback heading into the 2026 midterms. The results have sharpened a fight inside the party over its ideological direction and the role of progressive challengers in competitive urban districts.

Sources

Axios — "Huge defeat": Democrats left reeling after socialist "earthquake" in New York
House Democrats were left stunned on Tuesday night after two of their colleagues -- including the chair of the Congressional Hispanic Caucus -- lost primaries to left-wing challengers.
Read at Axios →
BBC World — Clean sweep for Mamdani-backed candidates in New York's Democratic primary
Brad Lander unseats Dan Goldman in a race that laid bare the city's divisions over the Israel-Gaza war.
Read at BBC World →
The Hill — Mamdani's big bet pays off in New York: 5 takeaways from Tuesday's primaries
New York City Zohran Mamdani's gamble in a series of House primary contests on Tuesday paid off, with all three of his picks clinching wins.
Read at The Hill →
Fox News Politics — Far-left surge: Mamdani-backed candidates oust Dem establishment incumbents
Mayor Zohran Mamdani emerges as Democratic kingmaker as three far-left congressional candidates he endorsed win New York City primaries over incumbents.
Read at Fox News Politics →

Mamdani-Backed Candidates Oust Two Democratic Incumbents in New York

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