Local Tennessee station questions prediction market accuracy; report finds Kalshi odds less reliable near
WJHL, a Johnson City television station, examined whether prediction markets accurately forecast elections and noted Kalshi and Polymarket have become popular platforms. NBC News, published October 29, 2026, referenced a report finding that election betting odds on prediction markets grew less accurate as primary elections drew closer. The NBC report cited Kalshi betting percentages but offered no further details on methodology or authors in the available text.
Accuracy critiques from mainstream outlets like NBC News and local stations feed directly into the legal fight Kalshi and Polymarket face in Tennessee and other states. State attorneys general in Ohio and Tennessee have already rejected federal preemption claims on sports contracts, and New Jersey has asked the Supreme Court to review a favorable appeals decision.
The Brazil election miss and now this primary accuracy pattern give opponents fresh talking points. Retail users lack tools to judge when prediction market pricing is sound versus when it is noise. For platforms, each media-cited failure risks harder CFTC classification and tighter state restrictions, even as Mansour pushes the opposite narrative in podcasts and press appearances.
Adds to a sequence of mainstream and academic examinations of prediction market accuracy — after Bloomberg's Brazil critique, a Cato Institute analysis, and Kalshi CEO Mansour's own trust-focused podcast tour — that are reshaping the public credibility contest ahead of state court rulings and CFTC rulemaking.