The New York City mayoral race turned into one of the most dramatic political betting events in recent memory, with Zohran Mamdani’s victory over Andrew Cuomo sparking both celebration and devastation among prediction market traders. The Polymarket betting platform saw record activity, with more than $424 million wagered on the outcome — and one trader losing almost a million dollars in a single bet.
According to Polymarket Analytics, a user known by the handle “fuxfux007” suffered a massive $969,169 loss after betting heavily against Mamdani’s victory. The trader reportedly placed two major wagers: one against Mamdani worth nearly $974,000, and another smaller bet for him valued at around $43,000. With Mamdani’s surprise win, the bearish position proved catastrophic.
On the opposite side of the trade, another bettor under the alias “debased” emerged as the biggest winner of the night, earning $188,487 by backing Mamdani early. Their confidence paid off handsomely as Mamdani secured the mayoral seat and became New York City’s 111th mayor.
The election also brought back heated discussions about market manipulation on prediction platforms. Some traders and observers claimed that large, strategic orders were placed to artificially inflate Mamdani’s perceived odds, drawing comparisons to last year’s U.S. election betting controversy. During that event, Polymarket faced similar accusations after a French trader’s multimillion-dollar wagers temporarily distorted Donald Trump’s chances.
However, experts have long argued that such price manipulation attempts are short-lived and self-correcting, as arbitrage and liquidity from professional traders tend to quickly normalize market prices. Still, billionaire Bill Ackmanreignited the debate by suggesting that Polymarket’s order books had again been influenced to make Mamdani’s victory look more certain than it was.
Despite the controversy, Polymarket’s predictive accuracy once again proved impressive. The market ultimately aligned with polling data, correctly forecasting Mamdani’s win before the votes were even tallied. The event not only underscored the growing popularity of decentralized betting platforms in political forecasting but also highlighted the risks and rewards that come with high-stakes crypto-based prediction markets.
As Polymarket continues to expand its reach, the New York mayoral race will likely be remembered as both a triumph for decentralized prediction accuracy — and a cautionary tale for traders who underestimate the volatility of political outcomes.
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