Minnesota Prediction Market Ban Triggers Federal Lawsuit

⏱ 3 min read

Minnesota became the first state in the nation to criminalize prediction market operations on May 19, 2026, when Governor Tim Walz signed a sweeping ban into law. Within 24 hours, the Commodity Futures Trading Commission filed a federal lawsuit to block the legislation, escalating what regulators called the "most aggressive" state crackdown on the multibillion-dollar industry.

The law makes it a felony to operate, advertise, or facilitate prediction markets in Minnesota starting August 1, 2026. Platforms like Kalshi, valued at $22 billion, and Polymarket, valued at $15 billion, face criminal prosecution if they continue serving Minnesota residents. The statute extends to services supporting prediction markets, including virtual private networks that could allow users to bypass the ban.

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Federal-State Jurisdiction Clash

The Minnesota ban represents a constitutional showdown over who regulates prediction markets. The CFTC argues these platforms trade in event contracts that qualify as derivatives under the Commodity Exchange Act, granting exclusive federal oversight. Minnesota counters that prediction markets constitute unregulated gambling that threatens public safety and youth protection.

CFTC Chairman Michael S. Selig condemned the law in unusually sharp terms, stating it transforms participants in lawful markets into felons overnight. He accused Governor Walz of prioritizing special interests over Minnesota farmers who rely on weather-related hedging products to manage agricultural risk.

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What the Minnesota Law Bans

Minnesota's statute prohibits any system allowing consumers to wager on future outcomes including sports, elections, live entertainment, world affairs, commodity prices, and catastrophic events. The legislation passed with strong margins: 100-32 in the House and 57-9 in the Senate, tucked inside a broader public safety bill.

State lawmakers carved out a narrow exception for weather-related trading following pushback from agricultural groups. An amended version permitting these contracts awaits the governor's signature. Minnesota Attorney General Keith Ellison defended the ban, citing concerns about addiction, impacts on younger users, and insider trading risks.

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CFTC's Swift Legal Response

The CFTC filed its lawsuit on May 19, 2026, seeking a preliminary injunction before the law takes effect. The complaint argues Minnesota's statute violates the Constitution by criminalizing federally regulated markets at the state level. The agency emphasized Minnesota's status as one of the largest agricultural producers in the United States, warning the ban could disrupt critical hedging markets farmers have used for decades.

This marks the CFTC's sixth lawsuit against a state over prediction market regulation. The commission has also sued Arizona, Connecticut, Illinois, New York, and Wisconsin, with federal courts already issuing preliminary injunctions in several cases.

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Impact on $44 Billion Prediction Market Industry

The prediction market sector crossed $44 billion in global volume during 2025, with monthly volume running at $37 billion as of early 2026. Kalshi currently dominates the U.S. market with approximately 90% market share, processing over $2.7 billion in weekly trades. Polymarket operates primarily outside the United States following a 2022 CFTC settlement, though it recently began re-entering the American market.

Both platforms have seen dramatic valuation growth. Kalshi's value increased from $2 billion to $22 billion in under a year, while Polymarket rose from $1 billion to $15 billion over the same period.

Platform	Current Valuation	Weekly Volume	Status in U.S.
Kalshi	$22 billion	$2.7 billion	CFTC-approved, 90% market share
Polymarket	$15 billion	$2.1 billion (global)	Restricted since 2022, re-entering
Industry Total	—	$37 billion/month	16 states in legal proceedings

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The Broader Regulatory Battle

Minnesota joins 16 states now involved in legal proceedings with prediction market platforms, according to federal court records. Eleven states introduced prediction market legislation during the 2026 session, with approaches ranging from full authorization to complete bans. The federal-state conflict has generated more than 20 lawsuits nationwide.

The regulatory uncertainty comes as Congress debates prediction market oversight within broader digital safety legislation. Recent insider trading scandals have intensified scrutiny. In April 2026, a U.S. Special Forces soldier was charged with pocketing over $400,000 through Polymarket contracts tied to classified military operations.

A federal appeals court decision could resolve the jurisdictional question. The Third Circuit issued a 2-1 ruling on April 6, 2026, holding that event contracts qualify as swaps under federal law, preempting state gambling regulations. A parallel case before the Ninth Circuit could create a circuit split if that court disagrees.

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Sources

This article draws from official regulatory releases, court filings, and verified news reports:

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.

— Michael S. Selig, Chairman, Commodity Futures Trading Commission · May 19, 2026