Arizona Attorney General Kris Mayes escalated the legal fight over prediction markets, by filing a 20-count criminal information against Kalshi. The case marks the first state criminal action against the platform and sharply raises the stakes in the wider dispute over whether event contracts are financial products or illegal gambling.
At the center of the case is Kalshi’s access to Arizona users and the legal status of the contracts it offered them. For traders, institutions, and counterparties, the filing turns a regulatory conflict into an immediate question about market access, enforceability, and platform risk.
Arizona Turns a Regulatory Dispute Into a Criminal Case
According to the criminal information filed in Maricopa County Superior Court, prosecutors allege that Kalshi accepted wagers from Arizona residents on professional and college sports as well as on election outcomes. The filing specifically points to contracts tied to the 2028 presidential race and several Arizona contests scheduled for 2026.
Arizona’s case did not emerge in isolation. State regulators had already warned Kalshi in a cease-and-desist order issued on May 21, 2025, arguing that the company’s event contracts amounted to unlicensed sports wagering under Arizona law.
That position reflects a broader state-level view of the platform. Arizona authorities are treating Kalshi’s offerings as activity that falls under anti-gambling statutes rather than under any lawful exception reserved for licensed event wagering.
Kalshi’s Defense Rests on Federal Preemption
Kalshi has consistently argued that its contracts are federally regulated products overseen by the Commodity Futures Trading Commission and therefore cannot be blocked by state gambling law. Its legal strategy depends on the claim that the Commodity Exchange Act and the CFTC’s designation of Kalshi as a contract market preempt state enforcement efforts.
That argument is now being tested in multiple jurisdictions at once. Kalshi filed federal suits against the Arizona Department of Gaming on March 13 and 14, 2026, seeking injunctive and declaratory relief, and it pursued a similar preemptive case in Iowa after a March 4 meeting with that state’s attorney general.
The outcome of this fight will reach well beyond one company. If courts accept Kalshi’s preemption argument, the platform could gain a precedent strong enough to defend national access to event contracts, but if states prevail, regulators across the country may feel emboldened to narrow or block the market state by state.
Criminal proceedings against Kalshi could pressure liquidity, force counterparties to reassess exposure, and leave participants in affected states facing uncertainty over whether access to event-based derivatives can continue under current market structure.