Bet nearly $200,000 an hour before the poll... Polymarket survey

A single trader placed nearly $200,000 on Nebraska Senator Pete Ricketts’ re-election on Polymarket roughly one hour before the New York Times/Siena poll was released, with similar-sized positions also taken on Kalshi. The Vanderbilt University research tracked trades on prediction markets just ahead of two NYT/Siena poll releases, and the Ricketts case—dated October 31—was one of them; the subsequent poll showed Ricketts leading his opponent. The finding matters because it suggests some market participants may be trading on information before public polling becomes available, raising questions about fairness and information leakage in prediction markets. Watch for further Vanderbilt research on pre-poll trading patterns and whether regulators or market operators respond to the apparent timing advantage.