Three far-left candidates backed by New York City Mayor Zohran Mamdani defeated the candidates House Democratic Leader Hakeem Jeffries wanted in Tuesday night's New York congressional primaries, a result that could reshape the power dynamics inside the Democratic caucus and threaten Jeffries' grip on the party's top House post.
Socialist-aligned challengers won in the 7th, 10th, and 13th Congressional Districts. Two sitting Democratic incumbents lost their seats. And the Brooklyn Democrat who has spent years positioning himself as the pragmatic face of his party watched his preferred candidates fall one after another, as the New York Post reported.
The results are not just an embarrassment for Jeffries. They are a warning sign about where the Democratic Party is headed, further left, faster than its leadership can manage.
In New York's 13th Congressional District, Darializa Avila Chevalier toppled incumbent Rep. Adriano Espaillat, whom Jeffries had endorsed for re-election. In the 10th District, Brad Lander, a former member of the Democratic Socialists of America, beat incumbent Rep. Dan Goldman, another Jeffries-endorsed ally. And in the 7th District, Claire Valdez won the open seat vacated by Rep. Nydia Velazquez, defeating Brooklyn Borough President Antonio Reynoso.
Jeffries had endorsed Espaillat and Goldman directly. He did not formally endorse in the 7th District per custom, but he made his preference clear. Just hours before Reynoso lost to Valdez, Jeffries held a press conference where he laid out the coalition behind Reynoso's candidacy:
"Nydia Velazquez and a coalition of very progressive Democrats, including Tish James, the attorney general, and the public advocate Jumaane Williams, along with the Working Families Party and many of the unions that we've worked closely with are on one side of that race, with DSA on the other. We'll see what happens."
What happened was a clean sweep for DSA's side.
All three winning candidates were endorsed by Mayor Mamdani. The Associated Press reported that all three ran on platforms calling for abolishing ICE, condemning Israel's war in Gaza as genocide, and taxing the rich. Jeffries had actively campaigned against Mamdani's slate, and lost across the board.
Goldman and Espaillat had both pledged to support Jeffries for leadership if Democrats reclaimed the House majority. Their replacements have been far less committal. Avila Chevalier refused to commit to backing Jeffries during a debate earlier this month. Valdez would not say whether she would vote to keep him as Democratic leader.
Before the polls closed Tuesday, Jeffries tried to minimize the stakes. He told reporters that he and Mamdani had "agreed to strongly disagree," and framed the primaries as isolated events.
"There are 215 members of the House Democratic caucus. A handful of primaries that go in one direction or the other, in a given state or two, aren't going to reshape who we are as House Democrats."
That is a generous reading. Losing two incumbent allies in your home state, plus a third seat you tried to steer, is not a "handful of primaries." It is a direct repudiation of your influence where it should be strongest. Jeffries has already faced growing questions about his hold on leadership, and Tuesday's results will only sharpen them.
The broader picture is worse. These three new members, if they win in November as expected in deep-blue districts, will join a growing socialist-aligned faction that has no particular loyalty to Jeffries and every incentive to challenge him from the left.
Of the three winners, Brad Lander offered the most conciliatory tone toward Jeffries, but even his support came wrapped in conditions. In a February statement, Lander said he was inclined to back Jeffries while reserving the right to challenge him.
"Progressive and moderate Democrats, across the whole spectrum, are going to have to have consensus behind a leader. And you're not going to agree with that leader on every issue. And there are moments, therefore, when you have to stand unified, and there are moments when you have to be willing to speak up courageously when you don't think people are fighting hard enough. And I'm committed to that."
Lander also pledged to "hold leadership accountable, and hold our party accountable, and hold myself accountable." That is not a ringing endorsement. It is a polite warning.
Goldman's defeat was particularly notable. Fox News reported that Goldman had served as lead counsel during the first impeachment inquiry into President Donald Trump, making his loss significant beyond local politics. Lander's victory, powered by endorsements from Bernie Sanders and Mamdani, signaled the rising power of the progressive wing in New York City.
Jeffries' credibility has faced scrutiny on multiple fronts, and the primary results add another layer of trouble. If the man who leads House Democrats cannot hold his own backyard, what does that say about his ability to hold the caucus together nationally?
The New York results are the most dramatic, but they are not isolated. Last month, self-described Democratic Socialist state Rep. Chris Rabb won Pennsylvania's Third Congressional District primary, powered by endorsements from Rep. Alexandria Ocasio-Cortez and other "Squad" Democrats. Rabb is heavily favored to win the November general election.
In California's 7th District, Sacramento City Councilwoman Mai Vang, described as a socialist, could unseat longtime incumbent Rep. Doris Matsui in a November runoff.
And in Colorado's 1st Congressional District, 29-year-old DSA-endorsed candidate Melat Kiros leads incumbent Rep. Diana DeGette by five percentage points in at least one recent poll, ahead of a June 30 primary. Jeffries has already shown a willingness to shift positions under political pressure, and the leftward lurch of his party may force more of the same.
If Kiros, Vang, and Rabb all win their races, the socialist-aligned bloc in Congress will grow substantially, and every new member arrives with less reason to defer to Jeffries than the incumbents they replaced.
The stakes extend beyond internal party management. If Democrats reclaim the House majority in November, Jeffries would be the presumptive candidate for Speaker. But that vote requires near-unanimity within the caucus. A growing bloc of socialist members who refuse to commit to supporting him, or who demand policy concessions as the price of their vote, could complicate his path to the gavel.
Goldman and Espaillat were reliable Jeffries votes. Their replacements are not. Avila Chevalier refused to commit. Valdez dodged the question. Lander offered conditional support at best. That is three reliable votes replaced by three question marks, all in a single night.
Jeffries has already conceded ground on redistricting strategy, and his leverage within the party appears to be shrinking, not growing.
The Democratic Socialists of America, the Working Families Party, and the Mamdani political machine did not just win three races Tuesday night. They demonstrated that Jeffries' endorsement is not enough to protect incumbents in New York, and that the establishment's coalition of progressive allies, unions, and elected officials can be outflanked from the left.
Democrats have spent years insisting that the "Squad" and its socialist allies represent a small, noisy fringe. Tuesday's results tell a different story. The fringe is growing. It is organized. It is winning primaries against sitting members of Congress. And it is doing so in the home territory of the man who leads the party in the House.
Questions about Jeffries' political judgment are not new, but the scale of Tuesday's losses makes them harder to dismiss. He campaigned against the Mamdani slate and lost every race. He endorsed two incumbents and watched both fall. He publicly touted the coalition behind his preferred candidate in the 7th District, and that candidate lost anyway.
Jeffries told reporters that a handful of primaries would not reshape the House Democratic caucus. Maybe not. But three new members who ran on abolishing ICE, who call Israel's military operations genocide, and who refuse to commit to supporting him for leader will certainly reshape the conversations inside it.
When the people you endorse keep losing to the people you oppose, the problem is not the voters. The problem is you.
