Arizona Files First Criminal Charges Against Prediction Market Kalshi

Arizona has become the first U.S. state to bring criminal charges against prediction market platform Kalshi, filing a 20-count complaint in Maricopa County court that accuses the company of operating an illegal gambling business and accepting wagers on state elections.

Attorney General Kris Mayes announced the charges on March 17, alleging that Kalshi accepted bets from Arizona residents on a wide range of events — including the 2028 presidential race, the 2026 Arizona gubernatorial race, the Republican gubernatorial primary, and the Arizona Secretary of State race — without holding a gambling license. Four of the 20 counts specifically target election wagering, which is illegal under Arizona law. While the charges are classified as misdemeanors, they represent a significant escalation in a growing conflict between state regulators and the fast-expanding prediction market industry.

"Kalshi may brand itself as a 'prediction market,' but what it's actually doing is running an illegal gambling operation and taking bets on Arizona elections, both of which violate Arizona law," Mayes said. "No company gets to decide for itself which laws to follow."

The criminal complaint arrives amid a flurry of legal skirmishing on both sides. Kalshi preemptively sued Arizona's Department of Gaming in federal court on March 12 — just five days before the charges were filed — arguing that the state was encroaching on the federal government's exclusive authority to regulate derivatives trading. The company has launched similar suits against Iowa and Utah in recent weeks. Kalshi's head of communications, Elisabeth Diana, called the Arizona charges "seriously flawed" and characterized them as "gamesmanship" designed to circumvent the company's federal litigation. "These charges are meritless, and we look forward to fighting them in court," Diana said.

The dispute is shaping up as a major test of federalism in financial regulation. Kalshi and other prediction markets contend they fall under the exclusive jurisdiction of the Commodity Futures Trading Commission, which regulates derivatives exchanges. CFTC Chair Mike Selig has publicly backed that position, writing in a Wall Street Journal op-ed that the agency would no longer "sit idly by while overzealous state governments" challenged its authority over the industry. But state officials like Mayes counter that prediction platforms are effectively gambling operations subject to state licensing and consumer protection laws — a clash that could ultimately require resolution by federal courts or Congress as the prediction market sector continues its rapid expansion into politically sensitive territory.