Fake polls from Wedgewood expose Kalshi data loophole that could cost traders

Polling firm Wedgewood admitted on Oct. 20 that it fabricated most of its election surveys, and VoteHub, an aggregator that carried those results, is also the named data source for recurring Kalshi contracts per the exchange's September 2025 regulatory filing. The episode exposes a data-integrity loophole in event-contract settlement that could leave traders holding positions priced on fraudulent inputs. Traders on prediction markets should care because it raises questions about source verification and recourse when underlying data proves false.