NYC Mayoral Primary: Mamdani Surges Ahead in Betting Markets as Voters Head to Polls
NYC Mayoral Primary: Mamdani Surges Ahead in Betting Markets as Voters Head to Polls

New York City voters are casting their ballots today in the Democratic mayoral primary, and the race has taken a dramatic turn, with Assemblymember Zohran Mamdani now favored by betting markets over former Governor Andrew Cuomo. As polls opened this morning, the online betting platforms Polymarket and Kalshi showed Mamdani with a notable lead, reflecting a significant shift in momentum.
As of Tuesday, Polymarket placed Mamdani’s chances at 62% against Cuomo’s 39%, while Kalshi showed a 57% to 42% split in Mamdani’s favor. This late surge for Mamdani follows an Emerson College/WPIX/The Hill survey released Monday, which indicated he had closed a 10-point gap with Cuomo since last month. The same poll revealed a clear generational divide, with voters under 50 largely supporting Mamdani, while Cuomo maintains a lead among those over 60.
The primary has seen a flurry of high-profile endorsements and significant financial backing for both front-runners. Former President Bill Clinton recently endorsed Cuomo on Sunday, praising his ability to “get things done” and protect the city from President Donald Trump. Cuomo has also received substantial financial support from figures like billionaire Michael Bloomberg, who donated $5 million to his campaign and an additional $3.3 million to a supporting super PAC. Other notable Cuomo backers include billionaire hedge fund manager Bill Ackman and Home Depot co-founder Kenneth Langone.
Mamdani, meanwhile, has garnered support from the progressive wing of the Democratic party. Earlier this month, Rep. Alexandria Ocasio-Cortez endorsed him, followed by Vermont Senator Bernie Sanders’ endorsement on X a few weeks later. Mamdani also cross-endorsed New York City Comptroller Brad Lander, who is polling third in the race and recently made headlines after being arrested by U.S. Immigration and Customs Enforcement.
Despite Cuomo having led most traditional polls, Mamdani’s traction in recent weeks, particularly among online bettors, has created a truly dynamic primary. Voters across New York City can cast their ballots until 9 p.m. EDT, with results expected to clarify who will secure the Democratic nomination to lead the city.
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