Minnesota legislation signed May 2026 prohibits operation of prediction markets within state borders, according to the primary reporting. The measure targets platforms enabling bets on event outcomes, establishing precedent for state intervention in collective forecasting mechanisms. Primary source: NPR, May 19, 2026. Related coverage in SEC filings on Polymarket operations notes similar jurisdictional constraints in prior years. AI research documentation from 2023-2025 shows labs referencing market-derived probabilities for model evaluation on questions such as capability thresholds and deployment timelines. Analysis of Metaculus and PredictIt archives indicates calibration advantages over surveys in aggregate forecasts. Regulatory text omits explicit references to AI applications, focusing instead on consumer protection statutes. Cross-referenced data from Robin Hanson papers on prediction markets demonstrate their role in reducing overconfidence biases in technical forecasting, a pattern unaddressed in the Minnesota statute language.