Fake election polls expose Kalshi loophole regarding data revisions

Polling firm Wedgewood admitted on Oct. 20 that it fabricated most of its election surveys, and VoteHub, which aggregates these results and serves as the data source for recurring Kalshi contracts, is implicated. Kalshi's September 2025 regulatory filing states that revisions to the Underlying made after Expiration will not be accounted for in determining the Expiration Value, raising questions about settled contracts based on false polling data. Researchers at FiftyPlusOne found inconsistencies in Wedgewood's Mississippi Senate survey data, and VoteHub's head of data science, Zachary Donnini, said he incorporated the data despite grading Wedgewood a D.