Kalshi, a federally regulated prediction market platform, has filed a federal lawsuit against Wisconsin officials challenging the state's law that prohibits betting on election results. The company argues the ban infringes on free speech rights and amounts to voter suppression.
Wisconsin is one of several states with laws restricting or prohibiting wagering on political outcomes. These statutes were largely enacted before prediction markets became mainstream financial instruments. Kalshi received CFTC approval to operate election contracts in 2023, but faces ongoing legal challenges from state-level gambling restrictions.
What the Right Is Saying
Free market advocates and Republican legal commentators have largely sided with Kalshi. The Manhattan Institute's Marie Ravitch argued that Wisconsin's law represents government overreach into private commercial contracts between consenting parties. Conservative legal scholars note that prediction markets function more like financial instruments than traditional gambling, and should be regulated accordingly.
Senator Tommy Tuberville of Alabama has introduced companion legislation to the Financial Innovation and Technology for the 21st Century Act that would establish clearer federal oversight of prediction markets while preempting conflicting state laws. His office stated that innovation in financial markets should not be stifled by outdated state gambling statutes.
What the Left Is Saying
Consumer advocacy groups and some Democratic lawmakers have expressed concerns about prediction markets influencing voter behavior. Representative Katie Porter of California has previously raised questions about whether political betting markets could discourage participation by creating perceptions that outcomes are predetermined. The Progressive Change Campaign Committee released a statement supporting states' rights to regulate gambling on elections, arguing that commercial interests should not override democratic integrity.
Election reform advocates note that existing federal securities law already restricts certain forms of market manipulation related to elections. They argue this framework is sufficient without allowing unrestricted prediction markets to operate in every jurisdiction.
What the Numbers Show
According to Kalshi's court filing, the platform processed more than $250 million in election-related contracts in 2025. Wisconsin residents accounted for approximately 3% of trading volume despite the state's prohibition on domestic participation, according to data cited in the lawsuit. The CFTC has approved Kalshi's exchange designation, making it one of only two federally regulated platforms permitted to offer election outcome contracts.
A 2024 study from the University of Chicago found that prediction market accuracy for electoral outcomes outperformed traditional polls by approximately 15% when measured against final results. However, academic research on whether such markets affect actual voter turnout remains inconclusive.
The Bottom Line
The lawsuit is scheduled for a preliminary injunction hearing in federal court in Madison within 60 days. A ruling in Kalshi's favor could set precedent affecting similar state laws in Nevada, Washington, and Montana. The outcome may also influence pending CFTC rulemaking on prediction market oversight expected later this year.