New York City Mayor Zohran Mamdani and his progressive allies have dramatically changed New York’s political landscape with significant victories in the congressional primaries. On Tuesday, his candidates ousted two incumbent congressmen, signaling a shift in the Democratic Party. This shake-up positions the democratic socialist as a pivotal figure in reshaping the party’s direction.
U.S. Representative Adriano Espaillat, the head of the Congressional Hispanic Caucus, lost to Darializa Avila Chevalier. Avila Chevalier, a democratic socialist, had organized pro-Palestinian protests at Columbia University. Additionally, U.S. Representative Dan Goldman, a two-term incumbent, was defeated by former City Comptroller Brad Lander, another Mamdani-backed candidate. Lander has connections to the democratic socialist movement.
Mamdani’s victory could give him a trio of allies in Congress. This creates a challenge for establishment Democrats, such as House Democratic Leader Hakeem Jeffries, who campaigned against Mamdani’s slate and came up short. Their aim is to move the Democratic Party further left on critical issues, with a focus on Israel’s conflict in Gaza. Despite concerns from Washington Democrats about potentially alienating swing voters, Mamdani expressed determination to reform politics.
It’s not just a question of electing more Democrats. It’s a question of electing better Democrats,Mamdani emphasized, further highlighting a focus on working-class representation.
Jeffries, however, argued that these outcomes are limited in impact. He noted the broader makeup of the House Democratic caucus remains unchanged.
In another race, Jack Schlossberg, grandson of John F. Kennedy, did not succeed in his bid for a seat vacated by Jerry Nadler. Mayor Mamdani refrained from endorsing anyone in this contest.
Celebrating their victory, establishment Democrats cheered the win of Micah Lasher. Lasher, supported by Democratic leaders, defeated other contenders, including anti-Trump activist George Conway.
Throughout his brief tenure, Mamdani has sought to promote candidates who challenge leadership-backed Democrats. Two of his successful candidates identify as democratic socialists, while Lander has voiced alignment with the movement. In his victory speech, Lander condemned Israel’s actions in Gaza and criticized Trump’s policies. He emphasized plans to abolish ICE and tax the wealthy.
Avila Chevalier, considered Mamdani’s most controversial nominee, defeated Espaillat, the first Dominican American elected to Congress. Her candidacy focused on her outsider status, despite criticism for past social media comments. Voter Sara Hyler endorsed Avila Chevalier. Hyler opposed Espaillat’s connections to the American Israel Public Affairs Committee (AIPAC).
Another race pitted Mamdani-backed Claire Valdez against Antonio Reynoso, Velazquez’s chosen successor. Despite Reynoso’s endorsement, he could not secure Mamdani’s support.
In contrast, Yvette Sanchez, a voter supporting Espaillat, criticized Mamdani’s challengers. She valued the support for established Black and Latino communities.
Outside New York City, a different dynamic unfolded. In upstate New York, Trump supporter Anthony Constantino won the Republican primary for a seat soon to be vacated by Elise Stefanik. Constantino, known for his extravagant pro-Trump displays, defeated state lawmaker Robert Smullen.
Associated Press writers Jake Offenhartz and Larry Neumeister contributed to this report.

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