#MinnesotaPredictionMarketBanBlocked Federal Judge Blocks Minnesota’s First-in-the-Nation Prediction Market Ban

A landmark ruling days before the law was set to take effect delivers a major victory for Kalshi, Polymarket, and the CFTC.

The Breaking News

On July 27, 2026, U.S. District Judge Katherine Menendez issued a preliminary injunction blocking Minnesota from enforcing its newly enacted law banning prediction markets. The ruling came just days before the ban was scheduled to take effect on August 1.

The injunction was granted at the request of the Commodity Futures Trading Commission (CFTC), Kalshi, and Polymarket. The ruling allows these platforms to continue operating in Minnesota while the legal proceedings unfold.

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What the Law Would Have Done

Minnesota’s legislation—signed by Governor Tim Walz in May 2026—made the state the first in the nation to explicitly outlaw prediction markets. The law would have:

· Prohibited the creation, operation, and advertising of prediction markets in the state
· Outlawed wagers on topics including sports, weather, popular culture events, war, and death
· Imposed criminal penalties for supporting such markets

The Minnesota Senate had passed the legislation by a vote of 56-10.

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The Legal Battle

The CFTC filed a lawsuit in May 2026 seeking to block the law. Kalshi and Polymarket US joined the legal challenge.

The Core Argument: The plaintiffs argued that Minnesota’s ban is preempted by federal law. The Commodity Exchange Act (CEA) gives the CFTC “exclusive jurisdiction” to regulate event contracts that qualify as “swaps”—financial agreements traded on designated contract markets.

Judge Menendez wrote that the Trump administration, Kalshi, and Polymarket are “likely to succeed on the merits” in arguing that the state ban is preempted by federal law.

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The Judge’s Reasoning

In her 44-page ruling, Judge Menendez determined that Minnesota’s prediction market statute is “likely at least partially preempted by the CEA”. She noted that Kalshi and Polymarket US are “designated contract markets,” which grants the CFTC exclusive jurisdiction to regulate transactions involving swaps.

However, she also issued a cautious note: the Minnesota statute “may not, ultimately, be preempted in all respects”. The ruling specifically applies to entities registered as designated contract markets with the CFTC. Contracts that don’t fit the statutory definition of a “swap” could potentially still face regulation.

Key Finding: “A preliminary injunction prohibiting Defendants from enforcing Minnesota’s prediction market statute strikes the right balance of harms while preserving the status quo”.

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Reactions from Both Sides

CFTC Chairman Michael S. Selig strongly supported the ruling, stating: “This Minnesota law turns lawful operators and participants in prediction markets into felons overnight. Minnesota farmers have relied on critical hedging products on weather and crop-related events for decades to mitigate their risks. Governor Walz chose to put special interests first and American farmers and innovators last”.

Minnesota Attorney General Keith Ellison pushed back: “Prediction markets are gambling, plain and simple, and Minnesota has every right to keep predatory gambling out of our communities. We respectfully disagree with the Court’s determination that the proper ‘status quo’ to maintain is one that allows predatory gambling apps to proliferate”. He added that the state looks “forward to continuing to litigate this case”.

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Why This Matters

1. A Growing National Debate

Minnesota isn’t alone in targeting prediction markets. Rhode Island, New Jersey, and California are attempting similar crackdowns. Arizona filed criminal charges against Kalshi—though a federal judge blocked the prosecution. Nevada extended a temporary ban, and Utah recently banned proposition betting.

2. The Industry’s Explosive Growth

Prediction markets have soared in popularity, partly due to regulatory relief from the Trump administration. Kalshi’s monthly volume reached $33 billion. These platforms allow people to bet on nearly anything—from political outcomes to whether Costco will raise hot dog prices.

3. Federal vs. State Authority

The case tests the balance of power between federal and state regulators. The CFTC argues that prediction markets are legitimate financial instruments for hedging risk—not gambling. Minnesota lawmakers view them as “indistinguishable” from typical gambling. “Gambling has always been a public health and a public safety issue since states have been regulating it,” said Minnesota state Rep. Emily Greenman.

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What Happens Next

The preliminary injunction will remain in effect until “a final decision on the merits is reached”. Minnesota Attorney General Keith Ellison has indicated the state will continue to defend its law.

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Conclusion

This ruling represents a significant victory for the prediction market industry and the CFTC’s federal authority. But the fight is far from over—the case will continue through the courts, and other states are watching closely. The outcome could shape the future of prediction markets across America.

#PredictionMarkets #CFTC #Kalshi #Polymarket