New York Democratic Primary: Who Won, Who Lost, and Why Zohran Mamdani Is the Big Winner

New York’s Democratic congressional primary delivered a major political upset as candidates backed by Mayor Zohran Mamdani defeated several establishment figures and showed the growing strength of the Democratic Party’s progressive wing.

The results are seen as a significant victory for Mamdani, whose influence has spread rapidly since his surprise rise to power.

who won

Brad Lander defeated Dan Goldman

Former New York City Comptroller Brad Lander defeated incumbent Rep. Dan Goldman in New York’s 10th Congressional District.

The competition was heavily influenced by the debate over the war in Gaza. Lander ran to Goldman’s left, calling for an end to US military aid to Israel and taking a more critical stance on Israeli military actions.

Darializa Avila Chevalier defeats Adrian Espaillat

One of the biggest upsets of the night came in New York’s 13th Congressional District, where first-time candidate Darializa Avila Chevalier defeated five-term congressman Adrian Espaillat.

Avila Chevalier, a member of the Democratic Socialists of America (DSA), campaigned as an outsider and drew support from younger progressive voters.

Claire Valdez gets an open seat

State Assemblywoman Claire Valdez has won the Democratic primary for New York’s 7th Congressional District.

Valdez defeated Brooklyn Borough President Antonio Reynos, who was endorsed by outgoing Rep. Nydia Velazquez.

Valdez campaigned to strengthen unions, immigrant rights, and a Green New Deal-style agenda.

Micah Lasher wins a crowded race in Manhattan

State Assemblyman Micah Lasher won the race to replace outgoing Rep. Jerrold Nadler.

Unlike other races, Mamdani did not support a candidate in this contest.

Dan Goldman, a two-term congressman and former federal prosecutor, became one of the top officials to lose. Despite having one of the most liberal voting records in Congress, he was outflanked on the left by Lander.

Espaillat’s defeat was perhaps the most surprising result of the night. As the chairman of the Congressional Hispanic Caucus and a longtime political figure, he was widely regarded as a powerful incumbent. His loss highlighted growing discontent among progressive voters.

Despite the support of Velazquez and parts of the democratic establishment, Reynos failed to stop Valdez’s insurgent campaign.

Jack Schlossberg, grandson of President John F. Kennedy, was unsuccessful in his bid for Congress in the 12th District race. He lost to Lasher in a crowded field.

Why is Zohran Mamdani the biggest winner?

Although his name was not on the ballot, Mamdani emerged as a major figure in the primary.

The 34-year-old mayor actively campaigned for Lander, Valdez and Avila Chevalier, all of whom won. He also helped several state-level candidates secure victory.

From mayor to king

Since taking office, Mamdani has been promoting a progressive agenda aimed at:

-Higher taxes for the rich

– Extended social programs

-Stronger criticism of Israeli policy in Gaza

A challenge to the democratic establishment

The victories represent a setback for establishment Democrats, including House leaders who supported some of the defeated candidates.

Several of Mamdani’s allies campaigned openly on issues such as:

– Extension of labor protection

-Decreasing US military support for Israel

Why were these races of national importance?

The New York primary highlighted the growing divisions in the Democratic Party due to:

The Gaza conflict became a defining issue in several races, with progressive candidates criticizing US support for Israel and establishment candidates taking more traditional Democratic positions.

ICE detention and immigration enforcement have emerged as major campaign issues, particularly among progressive candidates.

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