Arizona court extends election wagering case beyond sports ruling

Arizona's election wagering case outlasts the sports ruling that settled around it

Kris Mayes filed a 20-count criminal information in Maricopa County Superior Court in March, the first criminal case a US state had brought against Kalshi. The charges accused the company of operating an illegal gambling business and violating Arizona's election wagering statutes. Kalshi called the arguments paper-thin. A federal judge agreed, and in May, US District Judge Michael Liburdi blocked the prosecution entirely, ruling that Kalshi's status as a CFTC-designated contract market placed it beyond Arizona's reach.

That should have settled the question in Kalshi's favor. It has not.

The Ninth Circuit's ruling on the Nevada sports contracts case last Friday clarified one half of the dispute and left the other half precisely where it was. The appellate court held that the Commodity Exchange Act does not preempt state gambling laws when applied to sports-event contracts, upholding Nevada's authority to treat those products as sports betting under state law. For the election contract question, the court sent the matter back to the district court for further consideration. Arizona sits within the Ninth Circuit. Mayes moved quickly to note what the ruling did and did not say.

What it did not say is the part worth holding onto. The preemption argument that defeated Mayes in Maricopa County — the argument that CFTC oversight of designated contract markets displaces state law entirely — was not struck down by the Ninth Circuit. It was distinguished. The appellate court reached its conclusion on sports contracts specifically. The question of whether that same preemption logic applies to election-related contracts is now unsettled again at the district level, in Nevada, and by extension unresolved for Arizona's prosecution.

I have watched mechanism design arguments collapse not because they were wrong but because the legal timing did not follow the structural logic. Kalshi's preemption case is structurally sound. The CFTC did approve these contracts. The agency's authority over designated contract markets is not invented. But the Ninth Circuit has now introduced a product-category distinction that Kalshi's lawyers will have to argue through rather than around, and district courts reading that opinion will apply it selectively until the circuit produces cleaner guidance.

The federal government's April lawsuit against Arizona, Connecticut, and Illinois — filed to block state-level enforcement — remains in play. That suit is the stronger structural protection for Kalshi on election contracts than any single preemption ruling from a district court, because it plants the conflict at the federal-versus-state level rather than the product-classification level. If that litigation moves toward a consent framework or a clear federal win, the Arizona prosecution stays blocked regardless of how the Ninth Circuit eventually resolves the election contract question.

Mayes described last Friday's ruling as validating state authority over gambling regulation. That reading is accurate for sports contracts and premature for election contracts. The distinction matters because Arizona's criminal charges were not about sporting events. They were about election wagering, which is the category the Ninth Circuit explicitly declined to resolve and sent back down.