Prediction markets just got their first criminal case. It won't be the last.
Arizona AG Kris Mayes filed a 20-count criminal complaint in Maricopa County alleging Kalshi accepted bets from Arizona residents in violation of state law. Sixteen counts involve sports wagering without a license. Four involve election betting — which is outright illegal in Arizona regardless of licensing — including markets on the 2028 presidential race, the 2026 Arizona governor's race, the Republican gubernatorial primary, and the state's Secretary of State race.
The charges are misdemeanors carrying fines of $10,000 to $20,000 per count, and potentially jail time, though no shutdown order has been sought.
Kalshi had sued Arizona five days earlier trying to block state enforcement. A federal judge denied Kalshi's request for a restraining order on Tuesday.
Kalshi's argument: it's a federally regulated exchange operating under CFTC oversight, not a state-licensed casino, and states don't have the authority to regulate it.
Arizona's argument: call it what you want — if Arizona residents are placing bets on outcomes, that's gambling under state law.
CFTC Chair Michael Selig sided publicly with Kalshi, calling the Arizona prosecution "entirely inappropriate" and saying the agency is "watching this closely." The Trump administration has broadly embraced prediction markets and has signaled it will back them against state crackdowns.
More than 20 civil lawsuits are already pending against Kalshi. Arizona is the first to go criminal.
Prediction markets now process roughly $5 billion in weekly trading volume, according to Dune Analytics. They've exploded in popularity since the 2024 election — and have faced growing scrutiny over election betting, "death markets" tied to the Iran war, and insider trading concerns.
A bipartisan House bill has been introduced that would ban event contracts on elections outright and require state permission for sports markets. Arizona's criminal charges raise the pressure considerably — and legal experts say other states may follow.
