Minnesota's August 1 Prediction Market Ban on Kalshi and Polymarket, Explained

Every industry eventually meets the state that decides to just say no, outright, no carve-outs, no gray area. For prediction markets, that state is Minnesota. And the date to circle is August 1, 2026.

Dozens of states have poked at Kalshi and Polymarket with cease-and-desist letters, gaming board complaints, and lawsuits arguing existing gambling statutes apply. Minnesota did something different. It wrote a brand-new criminal law specifically targeting prediction markets, passed it with bipartisan margins, and set a hard effective date. If you write about, trade on, or build content around Kalshi and Polymarket, you need to understand exactly what this law does, because it's genuinely unlike anything else on the books.

What SF 4760 Actually Prohibits

Governor Tim Walz signed SF 4760 into law on May 18, 2026, as part of a broader public safety omnibus bill. It passed with real bipartisan support, 100-32 in the House and 57-9 in the Senate, which is worth sitting with for a second. This wasn't a narrow partisan vote. A lot of lawmakers across the aisle looked at prediction markets and decided they wanted them gone.

The law makes it a felony to operate, host, advertise, or otherwise support a prediction market platform within Minnesota's borders. It's broadly written. It covers systems that let users place wagers on future outcomes across sports, elections, entertainment, public figures, and world events. It specifically names, according to the lawsuit Kalshi later filed, categories like war, state or national emergencies, natural or human-made disasters, mass shootings, acts of terrorism, and public health crises.

Here's the part that surprised a lot of industry watchers. The law doesn't stop at the platforms themselves. It extends to payment processors, advertisers, data providers, and other facilitators of the banned activity, and it explicitly covers services that help residents evade the ban, including VPN providers. That's an unusually wide net, and Kalshi's own legal filing called out the breadth as a specific problem, arguing the bill "goes well beyond what other states have argued" and defines "wager" broadly enough to potentially "encompass all manner of ordinary contracts."

The One Carve-Out That Matters

Minnesota didn't ban everything that looks like a prediction market. After pushback from the agricultural industry, lawmakers amended the bill to exempt event contracts functioning as insurance against harm or loss, along with the purchase of securities and other commodities. Translation: farmers who use weather-related derivatives to hedge crop risk, a genuinely important financial tool with decades of legitimate use, are protected. Kalshi's lawsuit actually leans on this carve-out as evidence the state itself recognizes prediction-market-adjacent products serve legitimate financial purposes, which undercuts the state's broader argument that the whole category is just disguised gambling.

Three Lawsuits, One Consolidated Fight

Minnesota is now facing legal pushback from three separate directions, and understanding who sued and when matters if you're trying to predict how this resolves.

The CFTC moved first, and fast. Less than 24 hours after Walz signed the bill, CFTC Chairman Michael Selig announced the agency's own federal lawsuit. Selig didn't mince words: "This Minnesota law turns lawful operators and participants in prediction markets into felons overnight." He specifically invoked farmers, noting Minnesota agriculture has relied on weather and crop-related hedging products for decades. The CFTC's argument centers on the Supremacy Clause, claiming Minnesota's law is preempted because prediction markets traded on federally regulated designated contract markets fall under exclusive CFTC jurisdiction.

Kalshi sued nine days later, on May 27. Its complaint mirrors the CFTC's Supremacy Clause argument and adds a First Amendment claim, arguing the law's advertising restrictions unconstitutionally limit its ability to promote a lawful financial product. Kalshi's filing frames the situation starkly: the company faces an "impossible choice" between shutting down in Minnesota entirely or risking criminal prosecution, and it notes CFTC rules actually forbid Kalshi from discriminating against customers based on geography in the first place, meaning compliance with Minnesota's law might itself violate federal rules.

Polymarket joined as a third plaintiff shortly after, leaning even more heavily on the First Amendment argument than either of the other two plaintiffs, specifically challenging the provisions that criminalize data and verification services to prediction market operators.

All three cases have been consolidated, and a preliminary injunction hearing is scheduled for July 1, 2026. As of this writing, that hearing is happening today, and no ruling has been issued yet. The outcome of that hearing is the single most important near-term event for anyone trying to understand where this law actually lands.

Why Minnesota Is Different From Every Other State Fight

If you've followed the broader prediction market litigation landscape, you know most state actions have gone one of two ways: cease-and-desist letters invoking existing gambling statutes, or gaming board enforcement actions. Minnesota's approach breaks that pattern in a way worth naming explicitly.

It's a new criminal statute, not an application of existing gambling law. Every other major state fight, Nevada, Massachusetts, New Jersey, Tennessee, has involved regulators or courts trying to fit prediction markets into gambling frameworks that already existed. Minnesota's legislature instead wrote a purpose-built felony statute. That changes the legal terrain, because Kalshi and the CFTC aren't just arguing "your old gambling law doesn't apply to us." They're arguing a specific new law is unconstitutional on its face.

It has real bipartisan support, which most state actions don't. The 100-32 and 57-9 vote margins signal something the litigation numbers alone don't capture: this isn't a single attorney general or gaming commissioner picking a fight. It's a legislature that deliberately built consensus around banning the category outright.

It targets the entire supply chain, not just the platform. Naming payment processors, advertisers, data providers, and VPN services as potential violators is a meaningfully more aggressive legal strategy than anything other states have attempted. If this framework survives judicial review, other states weighing similar bans now have a template that goes further than a simple platform ban.

The agricultural carve-out creates a genuine internal contradiction Kalshi is actively exploiting. By exempting weather and crop-hedging contracts, Minnesota's own law implicitly concedes that some prediction-market-shaped products serve legitimate financial functions. That's not a small drafting choice. It's a live weakness in the state's legal position that will get tested in court.

The August 1 date creates a hard deadline other states haven't used. Cease-and-desist actions typically demand immediate compliance upon receipt. Minnesota instead built in a roughly ten-week runway between signing and enforcement, giving both sides a defined window to litigate before the law actually bites. That's unusual, and it's part of why the July 1 hearing carries so much weight, it's essentially the last realistic chance for a court to intervene before the felony provisions activate.

What Happens Next

If the court grants the preliminary injunction sought by the CFTC, Kalshi, and Polymarket, Minnesota's ban gets paused while the underlying constitutional questions work through the courts, likely for months or years, following the same pattern seen in New Jersey, Tennessee, and Arizona. If the court declines, Minnesota becomes the first state where operating a prediction market platform is genuinely a felony as of August 1, 2026, and Kalshi, Polymarket, and every Minnesota resident holding an open position will be navigating uncharted legal territory in real time.

Either outcome sets precedent other states are watching closely. Minnesota went further than any state before it. Whether that aggression pays off, or whether it becomes the case that finally establishes clear federal preemption nationwide, is likely to shape how this entire regulatory fight resolves.