Arizona Prediction Markets: The Only State to File Criminal Charges — and How the Platforms Beat Them in Federal Court

Yes, as a practical matter, event contracts are reachable by Arizona residents right now, and the thing keeping them reachable is a federal court order rather than any blessing from the state. Prediction-market platforms operate nationwide by registering with the Commodity Futures Trading Commission and treating their yes-or-no contracts as federally regulated financial instruments instead of bets. Arizona rejected that framing in the bluntest way any state has tried — by charging Kalshi with crimes — but a federal judge blocked the prosecution and ruled that federal law wins on this question. So the contracts stay live, protected not by Arizona but by an injunction against Arizona.

That is a genuinely unstable kind of legal. The May 5, 2026 permanent injunction from Judge Michael Liburdi is a district-court ruling on the merits, the first of its kind in the country, and it currently bars Attorney General Mayes and the Arizona Department of Gaming from enforcing state gambling law against CFTC-registered exchanges. But a permanent injunction at the trial level is not the last word. Arizona is expected to carry the case to the U.S. Court of Appeals for the Ninth Circuit, the same court weighing a cluster of parallel disputes out of Nevada, and a reversal there would put the criminal case back in play and could force platforms to wall the state off. The underlying criminal information has not been dismissed on its own terms; it has been frozen.

The short version for a resident: you can open these apps and trade today, the largest operators treat Arizona as open territory, and there is a live federal order shielding them. What you do not have is settled certainty. You are using a product Arizona’s chief prosecutor formally charged as a crime, in a fight that is heading up the appellate ladder, and the legal ground under it could shift on the strength of a single Ninth Circuit opinion. The rest of this page explains exactly how Arizona got here and what to weigh before you rely on that access.

Mayes did not soften the charge. Announcing the case on March 17, 2026, her office filed a 20-count criminal information in Maricopa County Superior Court against the two Kalshi entities — KalshiEx LLC and Kalshi Trading LLC — accusing them of running an unlicensed wagering operation in a state where legal sports betting is tightly controlled. “Kalshi may brand itself as a prediction market,” the attorney general said in substance, “but what it is actually doing is running an illegal gambling operation.” The framing was deliberate: not a regulatory gap to be filled, but conduct that Arizona’s criminal code already forbids.

The counts break into two groups. Sixteen of them target ordinary sports wagering — contracts on the outcomes of professional and college games, plus proposition-style contracts on how individual players would perform. This is the category at the center of nearly every state’s fight with the platforms, because a contract that pays a dollar if a team wins looks, to a state regulator, indistinguishable from a straight moneyline bet. The other four counts are what set Arizona apart from the rest of the country. They charge Kalshi with taking wagers on elections, a category Arizona bans outright, and the specific races named read like a civics roster:

• The 2028 U.S. presidential race.
• The 2026 Arizona governor’s race.
• The 2026 Arizona Republican gubernatorial primary.
• The 2026 Arizona secretary of state race.

Prosecutors also pointed to a market on whether the federal SAVE Act would become law, folding a policy-outcome contract into the same theory. The election counts are the ones that gave the case its national headlines, because betting on the result of an election touches a nerve that betting on a ballgame does not. A market where strangers stake money on who wins the secretary of state race — the office that oversees Arizona elections — is exactly the kind of product state officials have warned could corrode public trust in the count itself. Whether or not that argument prevails in court, it is why Arizona, and not a quieter state, became the one to test criminal charges.

The counts were charged as misdemeanors rather than felonies, and reporting on the filing described potential fines in the range of tens of thousands of dollars across the case rather than prison exposure for the corporate defendants. That is a meaningful detail: Arizona was not trying to jail executives so much as to brand the conduct criminal and establish, on the record, that these contracts are illegal bets under state law. A criminal label carries weight a civil fine does not, and it was the label — more than the dollar figure — that Kalshi raced to federal court to erase.

To understand the aggression, look at how gambling actually works in Arizona, because it is not built like most states. Legal casino gaming here belongs to the tribes. Under a framework of tribal-state compacts, more than 20 Native nations hold the exclusive right to operate Las Vegas-style gaming, and that exclusivity is the consideration Arizona receives in exchange — the tribes share revenue with the state, and the state promises not to let that market be undercut. Tribal gaming generates on the order of 3 billion dollars in annual revenue in Arizona, which makes the compacts one of the most consequential economic arrangements in state government.

Sports betting was grafted onto that structure with care. Governor Doug Ducey signed the Arizona event-wagering law in April 2021, and it took effect alongside amended tribal compacts that expanded gaming to include event wagering, daily fantasy contests, keno and a mobile lottery. The Arizona Department of Gaming regulates the whole apparatus, licensing operators, auditing the tribal casinos and enforcing the terms that keep the exclusivity bargain intact. Legal mobile sports betting launched in September 2021, age-gated at 21, taxed, and tied to a limited pool of tribal and commercial licensees. Every piece of that system was negotiated, and every piece assumes that anyone taking sports wagers from Arizonans is inside the licensed tent.

A prediction market blows a hole in that assumption. Kalshi offered Arizona residents contracts on the same games the licensed books cover, without a state license, without paying the event-wagering tax, without the 21-and-up floor, and without any obligation under the compacts. From the state’s vantage point that is not a novel financial product — it is an unlicensed sportsbook wearing a derivatives costume, and it siphons activity out of the very market Arizona promised its tribal partners it would protect. That is the deeper reason Arizona escalated to criminal charges while other states sent letters: the platforms were not just skirting a regulation, they were threatening the exclusivity that the whole legal-gaming economy is built on. It also foreshadows a separate line of attack the injunction does not resolve, since a preemption win against the state does nothing to answer a tribe’s contract-based claim under its compact.

Kalshi saw the criminal case coming and moved first. On March 12, 2026 — five days before Mayes unveiled the charges — the company filed its own suit in the U.S. District Court for the District of Arizona, asking for a declaration that its event contracts are lawful derivatives under the exclusive jurisdiction of the CFTC and for an injunction stopping the state from treating them as gambling. The theory was the same one Kalshi has pressed everywhere: register as a designated contract market, list the contracts, and let federal commodities law knock out any conflicting state gaming statute.

It did not work, at least not on the first pass. On April 9, 2026, Judge Michael Liburdi denied Kalshi’s request for a preliminary injunction. His reasoning had little to do with whether these contracts are really swaps and everything to do with a procedural wall. Once Arizona filed its criminal information, there was an active state criminal prosecution underway, and the federal Anti-Injunction Act — along with the long-standing reluctance of federal courts to interfere in ongoing state criminal matters — sharply limits when a federal judge can step in and freeze that kind of case. Liburdi called it premature to decide the swap question in that posture and declined to enjoin the prosecution. For a few days, Arizona’s criminal case stood, and the state looked like it had found the one procedural lane where the platforms’ usual federal-preemption playbook stalls.

That is the wrinkle that makes Arizona different from New Jersey or Ohio. In those states the platforms sued and the fight was joined on the merits. In Arizona, by charging Kalshi criminally, Mayes changed the procedural terrain and briefly boxed the company out of the federal forum it relies on. If the story had ended on April 9, Arizona would be the state that proved a criminal charge can defeat the preemption defense. It did not end there, because the company was not the only party with standing to go to federal court.

What Kalshi could not do for itself, its regulator did for it. The Commodity Futures Trading Commission — which under its current leadership has taken the position that it will sue any state that interferes with a federally licensed operator — filed its own complaint against Arizona in the District of Arizona on April 2, 2026, naming the state’s top officials, including Governor Katie Hobbs and Attorney General Mayes in their official capacities. The agency argued that the Commodity Exchange Act gives it exclusive authority over event contracts traded on a registered exchange and that Arizona’s prosecution trespassed on federal ground.

The procedural bar that sank Kalshi’s motion did not bind the federal government the same way. The restraint that kept Liburdi from enjoining a state criminal case at a private company’s request does not apply with the same force when the United States, acting through one of its agencies, seeks to protect its own regulatory turf. Around April 10, 2026, the judge granted the CFTC a temporary restraining order, halting Arizona from moving the criminal case forward and finding the federal government likely to succeed on its preemption claim. In a matter of days the picture flipped: the same court that had refused to help Kalshi directly now blocked the prosecution at the request of Kalshi’s regulator.

Then came the decisive step. On May 5, 2026, Judge Liburdi converted that temporary order into a permanent injunction. He did not hedge on the core question. Because Kalshi operates as a designated contract market under CFTC oversight, Arizona could not use its criminal gambling statutes to reach the company’s event contracts. Kalshi’s counsel Robert Denault framed the win in constitutional terms, saying the ruling confirmed that federal law is supreme. Arizona’s criminal case was not dismissed by the state court that received it; it was smothered by a federal court that told the state it lacked the authority to bring it.

Most of the pro-platform decisions before Arizona were preliminary. A judge would find the platforms likely to win and freeze enforcement while the case continued, but stop short of a final ruling on the substance. Even the Third Circuit’s landmark New Jersey decision in April 2026 was a preliminary-injunction ruling that spoke only to likelihood of success. Liburdi’s order was different in kind. A permanent injunction reflects a decision on the merits — the court’s actual conclusion about who is right, not just who is likely to be — and that is why the Arizona ruling is described as the first district-level merits holding in the country that federal commodities law preempts state gambling law as applied to CFTC-regulated markets.

Set that against the map of split decisions and its weight becomes clear. Federal judges in Ohio and elsewhere had rejected the swap theory outright; courts in Tennessee and now Arizona embraced it. The disagreement is exactly what pushes a legal question toward the Supreme Court, and a full merits ruling from a district court, rather than a provisional one, gives the pro-platform side a firmer piece of precedent to build on. It is worth being precise, though: some coverage of the May 5 order characterized it as a preliminary rather than a permanent injunction, and the label matters on appeal. Either way, the ruling froze Arizona’s prosecution and staked out the merits position, and either way it is now the Ninth Circuit’s to review.

There is also a political dimension to note as fact, not endorsement. The CFTC’s willingness to sue states on the platforms’ behalf reflects a deliberate posture adopted after a change in the agency’s leadership, and the Arizona intervention is one of a string of such suits the commission has brought against states across the country. Liburdi, for his part, is a federal judge appointed during the first Trump administration. None of that decides whether the swap theory is correct; it is context for why the federal government and a federal court lined up against a state attorney general on this question.

Behind the legal fight sits a fairly simple mechanic, and understanding it explains why the two sides talk past each other. A prediction market poses a question with a binary outcome — will a team win, will a number close above a line, will a candidate prevail — and lets people buy shares in either the yes or the no side. Prices sit between one cent and 99 cents and behave like a live probability read, so a contract changing hands at 58 cents implies the market thinks the event is roughly 58 percent likely. When the question resolves, the winning side pays out a full dollar per contract and the losing side collapses to zero. Your gain or loss is the distance between your entry price and that resolution.

The design point Kalshi leans on is who sits across from you. At an Arizona-licensed sportsbook, the operator is your counterparty: it sets the odds, books your action, and profits when you lose. On an exchange-style prediction market, the platform is not betting against you — it matches your order against another trader who took the opposite view and collects a fee for running the marketplace. That peer-to-peer structure is the backbone of the argument that these are traded financial instruments rather than house-banked wagers. Arizona’s answer, echoed by the state courts and regulators fighting the model nationally, is that a resident staking money on the Diamondbacks and cashing out if they win does not experience anything different because of who is on the other side of the trade. Some products muddy the picture further by routing orders through a broker or distributor rather than a native exchange, which is one reason the litigation increasingly turns on which specific contracts qualify rather than which company lists them.

The market menus here are broad. Depending on the operator, an Arizona resident can find contracts on economic data such as interest-rate moves and inflation prints, on cryptocurrency price levels, on entertainment questions from awards to box-office totals, and on politics and policy outcomes — alongside the sports contracts that draw most of the legal fire. Markets on economic and macro events have historically drawn little objection from any regulator and sit closest to the traditional heartland of commodities and futures trading.

Two categories carry the sharpest Arizona-specific edge. Sports contracts are the ones the criminal information built 16 of its counts around, because they map so cleanly onto the licensed, taxed, tribally anchored event-wagering market the state is protecting. Election contracts are the ones that made Arizona unique: the state bans wagering on the outcome of an election, and four of the criminal counts targeted exactly that, from the presidential race to the office that runs Arizona’s own elections. The permanent injunction currently shields even those markets from state prosecution, but it is worth understanding that the election category is where Arizona’s legal and political objections are strongest and where a reviewing court might draw the tightest line. The further a contract sits from an Arizona election or an Arizona sporting event, the less it resembles the conduct Mayes charged; the closer it sits, the deeper into the disputed zone it goes.

Each distributes contracts differently and gates sports and election markets differently, so treat availability as specific to the app in your hand. Our prediction markets hub tracks every brand we cover.

The federally regulated exchanges list or distribute contracts under the same Arizona legal umbrella the injunction created. The Pick’em products run a parlay-style prediction model, and Polymarket and OG.com sit on the offshore/crypto side with a distinct legal footing. Each gates sports and election markets differently, so confirm what is live in the app before funding.

For someone who mostly wants to bet on games, Arizona already offers a route with none of this legal fog. Regulated mobile sports betting has run in the state since September 2021, operated by licensed tribal and commercial partners under Department of Gaming supervision, with a 21-and-up requirement, state consumer protections, and a self-exclusion option built into the system. A wager placed with one of those books is unambiguously legal, regulated gambling. A sports event contract, by contrast, is a product Arizona’s attorney general charged as a crime and that survives here only because a federal court told the state to stand down — a fundamentally less settled footing.

The practical mechanics differ too. A licensed sportsbook is your counterparty with posted odds and the full range of familiar bet types; a prediction market matches you against other traders at prices that drift like a market and settle at a dollar or nothing. There are things a prediction market can do that a sportsbook cannot — contracts on economics, politics and culture that no Arizona book will ever list — and things a sportsbook offers that an exchange does not, including the state safety net. If certainty of legal standing is what you care about most, the licensed path is the clear one. Compare operators on our Arizona online sportsbooks page, see which other states have online sportsbooks, or start at the broader online sportsbooks hub. For the full picture of legal wagering in the state, our Arizona gambling sites guide is the companion to this one.

Under the jurisdictional argument sits a plainer concern the state keeps returning to: these exchanges sit outside the safety net Arizona built for gambling. A resident trading sports contracts on a CFTC platform gets no Arizona self-exclusion enrollment, no state complaint or dispute-resolution channel through the Department of Gaming, and, on most platforms, a minimum age of 18 rather than the 21 the state requires for licensed event wagering. That three-year age gap is more than a technicality — an 18-year-old barred from every licensed Arizona sportsbook can open a sports contract on an exchange the same afternoon. It is exactly the kind of protection the compact system was designed to guarantee and the kind the platforms are not bound to provide.

FanDuel Predicts stands out as the exception here, having voluntarily layered on deposit limits, self-exclusion and support referrals that federal law does not force on it. The rest of the field leans on financial regulation that was never built around problem gambling. There is also the question of your balance if the legal ground shifts. Should the Ninth Circuit reverse and Arizona regain the authority to enforce, an operator could be pushed to exit the state. In other states, platforms forced out by court orders have generally let users close positions and withdraw funds, and some orders required it — but there is no Arizona-guaranteed process for a CFTC exchange, so a balance parked on one of these apps does not carry the account protections a licensed Arizona book would. Keep that tail risk in mind before you leave a large sum on the table.

Reporting on prediction-market gains is genuinely unsettled, and none of this is tax advice. Kalshi does not send 1099-B forms for its event contracts, the IRS has published no formal guidance classifying the activity, and tax professionals still disagree over whether the proceeds are gambling income, ordinary income, capital gains, or something governed by the Section 1256 rules for certain regulated futures. Products distributed through a broker may be reported differently than exchange-native ones, so the answer can vary by which app you used. Arizona’s own event-wagering tax falls on licensed operators rather than on you as a bettor, and the absence of that operator-level tax is part of what the state says makes the platforms unlawful in the first place. If you have realized meaningful gains, keep your own detailed records and talk to a professional rather than assuming any platform will hand you a clean tax document.

Arizona belongs to the cluster of states that chose confrontation over accommodation, but it picked the most extreme weapon on the shelf, and the contrast with its neighbors in the fight is instructive.

• Nevada leaned hardest on state-court enforcement and contempt pressure, winning a trial-court block and pushing Kalshi toward contempt exposure after the company declined to geofence, while rivals like Crypto.com and Robinhood voluntarily pulled their Nevada sports markets. Arizona went further up the severity scale by charging crimes rather than seeking civil orders.
• New York ran a dual federal-and-state track and, on July 31, 2026, escalated to a state-court petition seeking penalties reported in the tens of billions of dollars, built on unlicensed-operation and under-21 theories. Its exposure figure dwarfs Arizona’s fines, but it stayed civil where Arizona turned criminal.
• Ohio paired a widely cited district-court opinion rejecting the swap theory with a 5 million dollar civil penalty, and its judge ruled against the platforms where Arizona’s ruled for them — a mirror image of the merits outcome.
• Minnesota passed the country’s first statutory ban, only to see a federal judge block it in late July 2026, a legislative route Arizona never took.
• Tennessee sits on the same side of the merits as Arizona, with a district court that leaned toward the platforms — one of the friendliest forums the industry has found.

What makes Arizona singular is the criminal charge and the way it was undone. No other state put the conduct in a criminal information, and no other state produced a full district-level merits injunction holding the state powerless to enforce. Arizona is at once the most aggressive attacker and, for now, the site of the platforms’ cleanest defensive win. The tribal-exclusivity backdrop also hands Arizona a motive the preemption ruling does not extinguish, which is why the state is unlikely to walk away quietly.

• The Ninth Circuit appeal. Arizona is expected to challenge the May 5 injunction in the same appellate court weighing the consolidated Nevada cases. A reversal would revive the criminal prosecution and could force platforms to block the state; an affirmance would cement the ruling as leading pro-platform precedent. This is the single most important thing to track.
• The status of the criminal information. The 20 counts in Maricopa County Superior Court are frozen, not dismissed. Watch whether the state court formally disposes of them or holds them in abeyance pending the federal appeal.
• Any tribal action. A preemption win against the state does not answer a tribe’s compact-based claim. If Arizona’s gaming tribes pursue their own theory over lost exclusivity, it would open a front the injunction does not cover.
• Platform footprints inside Arizona. Any operator quietly geofencing the state would be the first practical sign the legal risk is changing behavior on the ground, regardless of what the docket says.
• National developments. A Supreme Court petition flowing from the broader circuit split, or federal legislation defining these contracts, could override the Arizona-specific fight entirely.

• Arizona Attorney General’s Office — press release announcing the 20-count criminal information against Kalshi, March 17, 2026 (azag.gov).
• Maricopa County Superior Court — State of Arizona criminal information against KalshiEx LLC and Kalshi Trading LLC, including the four election-wagering counts.
• U.S. District Court for the District of Arizona — Kalshi’s declaratory and injunctive action (filed March 12, 2026) and the CFTC’s suit against Arizona officials (filed April 2, 2026); orders of April 9, on or about April 10, and May 5, 2026 by Judge Michael Liburdi; dockets via CourtListener and PACER.
• Commodity Futures Trading Commission — complaint for declaratory and injunctive relief against Arizona officials and the agency’s event-contract enforcement posture (cftc.gov).
• Arizona Department of Gaming — event-wagering regulation, tribal-state compacts and licensing (gaming.az.gov).
• Arizona event-wagering law of 2021 and the amended tribal compacts — via the Arizona Legislature (azleg.gov) and LegiScan.
• National context: our is online gambling legal overview and state-by-state index.

This area of law shifts week to week. Each date and case status on this page is current to August 2, 2026; confirm the latest status of the Ninth Circuit appeal and the Maricopa County criminal information before acting on anything here.