Alexandria Ocasio-Cortez humiliated Joe Crowley in 2018 – a ten-term Democrat powerhouse who never saw her coming.
Eight years later, the socialists have a mayor's office, a 50,000-volunteer army, and a target list.
What New York City Mayor Zohran Mamdani did to Hakeem Jeffries on Thas Democrats in Washington saying things they can't walk back.
Zohran Mamdani Swept New York's 2026 Democratic Primaries and Humiliated Hakeem Jeffries
New York City Mayor Zohran Mamdani endorsed three Democrat Socialist candidates in Tuesday's congressional primaries.
All three won.
Former City Comptroller Brad Lander crushed two-term incumbent Dan Goldman, an impeachment manager against Trump, by more than 30 points in New York's 10th District.
Darializa Avila Chevalier – a 32-year-old community organizer with zero elected experience – defeated five-term Rep. Adriano Espaillat, chairman of the Congressional Hispanic Caucus.
State Assembly member Claire Valdez won the open seat race in the 7th District, beating Brooklyn Borough President Antonio Reynoso despite former Rep. Nydia Velázquez endorsing against her.
Jeffries backed Goldman and Espaillat directly. He hinted at Reynoso.
Three for three. All in the wrong column.
One moderate House Democrat – speaking anonymously – called the night an "earthquake" and a "huge defeat" for Democratic leadership.
"Holy sh*t," said a second senior House Democrat. "Buckle up."
The New DSA Congress Members Who Want to Abolish ICE and Called Veterans War Criminals
Lander, Avila Chevalier, and Valdez all pledged to abolish ICE, called Israel's military campaign a "genocide," and promised to cut off American military aid.
All three demanded Medicare for All and higher taxes on what they call "the rich."
Avila Chevalier attended a pro-Hamas march the day after October 7 and called American military veterans "child murderers" guilty of "war crimes."
She appeared on Election Day with Hasan Piker – a far-left online streamer known for defending communism – to get out the vote.
Democrat primary voters in Harlem just sent her to Congress.
This is the party.
How the DSA Primary Wins Put Hakeem Jeffries on the Wrong Side of His Own Party
Jeffries is trying to win back the House majority in November.
He needs candidates who can win in swing districts and is party needs a message that appeals to middle America.
What he has instead is a freshmen bloc that refuses to back his leadership – powered by Mamdani's organizing machine and answering to nobody in Washington.
Axios reported earlier this year that more than 80 Democrat House candidates either refused to commit to Jeffries' leadership or actively opposed him.
That was before Tuesday night.
A senior House Democrat, asked whether colleagues were worried about the results, gave a three-word answer: "Yes they are."
One House Democrat told Axios there was "lots of silence" in the Congressional Hispanic Caucus text chat after Espaillat's loss.
Rep. Tom Suozzi – co-chair of the bipartisan Problem Solvers Caucus – didn't soften the diagnosis.
"People who do not support the DSA wring their hands at cocktail parties, while the DSA is organizing," he told Axios.
He's right.
Mamdani converted his 2025 mayoral campaign into a congressional organizing machine with 225 Democratic Socialists of America chapters, more than 100,000 dues-paying members, and a stranglehold on New York City Democrat politics.
Establishment Democrats have no equivalent. They never built one.
Democratic Socialists Now Hold Power in New York Washington DC and Los Angeles After 2026 Wins
The DSA is no longer a fringe organization running candidates in safe urban seats.
In 2026 alone, Democrat Socialist candidates have won or advanced in Maine, California, New Jersey, Pennsylvania, and now New York.
The American Enterprise Institute's Ruy Teixeira told the Washington Examiner the organization is "far more influential than people would have guessed it would be just several years ago."
The moderate Democrat who called Tuesday night an "earthquake" said the lesson is that "appeasement doesn't work."
They're only now figuring that out.
All three socialist freshmen represent districts so heavily Democrat they'll win in November without breaking a sweat.
Three new abolish-ICE, pro-Hamas, tax-the-rich socialists – headed to Washington whether Jeffries likes it or not.
The Democrat Party no longer has a socialist problem.
It has a moderate problem.
Sources:
- Andrew Solender, "Socialist 'earthquake' leaves Democrats reeling," Axios, June 24, 2026.
- "All 3 Mamdani-backed candidates projected to win NY primaries," CBS News New York, June 23, 2026.
- "Party of Zohran: Mamdani emerges as Democratic kingmaker after socialist allies sweep NYC primaries," Fox News, June 24, 2026.
- "Zohran Mamdani's picks take key House primaries amid a broad battle over Democrats' direction," NBC News, June 24, 2026.
- "Scoop: Hakeem Jeffries faces growing threat of a 2027 rebellion from his members," Axios, March 16, 2026.
- "Democratic Socialists of America expand influence after primary wins," Washington Examiner, June 2026.
- Jon Levine, "The Nutty Professor: Socialist in Close House Race Taught Ultra-Woke College Classes," Washington Free Beacon, June 12, 2026.