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Billionaire investor Bill Ackman is escalating his commentary on the New York City mayoral race, claiming Republican Curtis Sliwa’s refusal to exit has pushed democratic socialist Zohran Mamdani to a 90% chance of victory, according to prediction market data.

Ackman, the founder of Pershing Square Capital, argued that Sliwa staying in the race is helping Mamdani secure the win.

On Friday, Ackman posted new Polymarket odds on X showing Mamdani near 90%, well ahead of former Gov. Andrew Cuomo and Sliwa.

"It was not Zohran Mamdani’s debate performance. It was Curtis Sliwa’s statement after the debate that he is not leaving that has tipped the odds to 90% for Mamdani," Ackman wrote on X .

Sliwa had said he would not dr

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