New York City's Democratic primaries delivered a striking show of strength for the city's ascendant left, as a slate of candidates backed by Mayor Zoran Mamdani swept to victory in a set of closely watched races. The results from Tuesday's contests amounted to a significant political win for the mayor and the movement he represents, and they reshaped the map of the city's congressional and legislative races heading toward November.
Among the biggest upsets came in the 13th Congressional District, where Derelicia Avila-Chevalier, a newcomer and Ph.D. student running as a Democratic Socialist, defeated five-term incumbent Adriano Espaillat. Even in neighborhoods that might have been expected to stick with the longtime congressman, reporters noted that voters broke for the first-time candidate, handing her one of the night's marquee results.
The wins extended across several districts. In the 10th, Brad Lander unseated two-term incumbent Dan Goldman, while in the 7th, Claire Valdez, another Democratic Socialist, prevailed. All three had been endorsed by Mamdani, who according to the report also backed five state legislative candidates who won their races the same evening.
The outcome carried particular weight for the mayor. Many analysts had wondered about the political risk Mamdani was taking by putting his name behind the candidates, questioning whether his endorsements would help or hurt them. By the end of the count, the gamble appeared to have paid off, and paid off big, reinforcing his standing as the city's most powerful figure on the Democratic left.
The mayor, a Democratic Socialist himself, shares that label with several of the winners, including Valdez. Lander, by contrast, is not a Democratic Socialist, but he and Mamdani had cross-endorsed each other during the mayoral election, an alliance that supporters said paid off for Lander in his own race this time around.
Speaking after the results, Lander framed the moment as one of party unity in the broader fight against President Trump. He argued that the real divide within the party was not between its progressive and moderate wings, saying he did not think the line was between progressives and moderates, but rather between what he called fighters and folders.
Not everyone welcomed the results. In a statement, Bruce Blakeman said the Hochul Mamdani lunatic wing of the Democratic Party had made it less affordable and less safe to live in New York, and called on common sense Democrats to join him. His words offered a preview of how Republicans intend to campaign against the party's increasingly progressive profile, which some analysts cautioned could become a liability in November.