
Mamdani-Backed Candidates Defeat Hakeem Jeffries Preferred Picks in New York Primaries
Key Takeaways
- Mamdani-backed candidates swept all three endorsed Congressional primaries
- Incumbents Espaillat and Goldman defeated by Mamdani-backed challengers
- The primaries mark a major leftward surge challenging establishment Democrats and Jeffries
Mamdani-backed primary wins
House Minority Leader Hakeem Jeffries (D-NY) suffered a blow Tuesday night after far-left congressional hopefuls defeated his preferred candidates in three New York primary election races.
“There used to be just mild seasons, they say; now it even seems that the seasons themselves no longer exist: campaigning was held on Ferragosto, and now that it’s Christmas the Democratic Party is engaged in the most delicate congress in its history”
Wins by socialists Darializa Avila Chevalier and Claire Valdez in New York’s 13th and 7th congressional districts, respectively, along with left Israel-critic Brad Lander’s victory in New York’s 10th District, could complicate Jeffries’ path to retaining the Democratic leadership post after the November midterm elections.

Jeffries endorsed defeated incumbent Reps. Dan Goldman (D-NY) and Adriano Espaillat (D-NY) for re-election in the 10th and 13th districts, and NPR reported that Mamdani’s endorsed candidates swept their primaries, marking “a massive win for the left and a major blow for establishment Democrats.”
In the open 7th district race vacated by Rep. Nydia Velazquez, Jeffries opted not to formally endorse a candidate per custom but touted the coalition behind Brooklyn Borough President Antonio Reynoso before Reynoso lost to Valdez.
Jeffries, Mamdani, and anxiety
After the primary results, Jeffries told CNN that he and Zohran Mamdani “strongly” disagreed over his primary picks ahead of Election Day and said Mamdani has “work to do in terms of the conversations that he’s going to have with members of Congress moving forward.”
CNN also captured rising anxiety among sitting congressional Democrats, quoting Rep. Josh Gottheimer of New Jersey asking, “Are we going to let them take over the party? Or are we going to stand up and fight back?”

Gottheimer’s concern was tied to the idea that “Many of us believe, as I do, that if you’re a socialist, you’re not a Democrat,” as Democrats weigh how the Mamdani-backed slate could affect efforts to flip the House.
Jeffries, speaking to reporters, downplayed fears about Mamdani making enemies on Capitol Hill, saying the mayor and he agreed to “strongly disagree” about some endorsements and that Mamdani has “work to do” with members of Congress moving forward.
What’s at stake in November
The New York Post framed the stakes as a potential leadership problem for Jeffries, saying the Mamdani-backed candidates’ victories could complicate his path to retaining the Democratic leadership post and potentially the speakership after the November midterm elections.
“House Minority Leader Hakeem Jeffries (D-N”
CNN reported that Democrats worry Republicans will tee up the Mamdani slate’s most controversial positions for attack ads in battlegrounds across the country as the party’s internal divisions sharpen.
NPR described Mamdani’s gamble as breaking with Democratic leaders by throwing support behind leftist candidates “unafraid to criticize Israel and push for ambitious economic policies,” and it said the districts heavily favor Democrats with Valdez, Lander and Avila Chevalier expected to win their general election matchups in the fall.
In the immediate aftermath, Mamdani told reporters that the primary results showed “New Yorkers are hungry for a new kind of politics” and that they believe “working people should be at the heart” of their platforms, while Jeffries continued to argue the relationship with Mamdani is “a very good one.”
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