Judge blocks Minnesota ban on prediction markets

TLDR

A US federal judge has temporarily blocked Minnesota from enforcing its new ban on prediction markets, letting Kalshi and Polymarket continue operating in the state while the case is litigated.

1. Judge Katherine Menendez granted a preliminary injunction that pauses Minnesotas law against prediction markets for CFTC-registered platforms Kalshi and Polymarket US.
2. The ruling leans on federal Commodity Exchange Act preemption, but applies mainly to event contracts that qualify as swaps, so it is both narrow and temporary.
3. Prediction markets remain in a legal gray zone as Minnesotas case continues, other states pursue their own crackdowns, and the CFTC works on new national rules.

Deep Dive

1. What The Judge Actually Did

On July 27, 2026, US District Judge Katherine Menendez issued a preliminary injunction that stops Minnesota from enforcing its new prediction market ban against CFTC-regulated platforms Kalshi and Polymarket US. Reports from outlets like NBC News describe the order as pausing the law days before its planned August 1 start, after lawsuits filed by the Justice Department, the CFTC, Kalshi, and Polymarket challenged the ban as inconsistent with federal law.

The order forbids Minnesota from enforcing the statute against entities registered as designated contract markets with the CFTC, letting those platforms keep serving Minnesota users while the case is heard. This is not a final ruling on the laws validity, but it preserves the current access to regulated prediction markets in the state.

Confidence: high because multiple independent reports describe the same injunction terms and scope.

2. Why It Matters For Markets And Crypto

Menendez found the plaintiffs are likely to succeed, at least in part, on claims that the federal Commodity Exchange Act preempts Minnesotas ban where event contracts count as swaps, which are under the CFTCs exclusive jurisdiction on designated contract markets. Coverage from Cointelegraph and CoinDesk notes that several contracts on Kalshi and Polymarket US appear to meet that definition, giving the federal regulator primary authority over those markets.

However, the judge also cautioned that not every event contract on these platforms necessarily qualifies as a swap, so the state law might still apply to some products if the case proceeds and the injunction is narrowed. For crypto users, this matters because Polymarket and other prediction venues are part of a broader ecosystem of event-linked derivatives that often interact with stablecoins, on-chain settlement, or crypto-native exchanges.

3. What To Watch Next

The Minnesota case continues, and the injunction could be narrowed or overturned, so the ban is paused, not gone. At the same time, other states are taking different approaches: New York courts have allowed enforcement of gambling laws against some Kalshi sports contracts, while a Third Circuit decision limited New Jerseys reach, creating conflicting precedents.

On the federal side, the CFTC is advancing a detailed event-contract framework under Regulation 40.11, with recent advisories demanding contract-specific disclosures and a three-step public interest test, and major players like Hyperliquid and Multicoin filing comments in favor of clearer national standards. The outcome of these rules, together with state-level cases like Minnesotas, will determine how easy it is for US-based users to access prediction markets, including those that touch crypto.

Conclusion

Minnesotas ban has been put on hold for now, giving Kalshi and Polymarket US a significant, but provisional, win and reinforcing the argument that many prediction contracts belong under federal derivatives rules. At the same time, divergent state rulings and evolving CFTC policy mean the legal status of prediction markets remains unsettled. For crypto-focused users, the key is that regulatory lines around event contracts and swaps are still being drawn, and those lines will decide where and how prediction markets can operate.