#MinnesotaPredictionMarketBanBlocked

This is a significant development for U.S. prediction markets, as it centers on the question of whether federal law preempts conflicting state law.

Minnesota enacted a law—signed by Governor Tim Walz on May 18—that would have made operating certain prediction markets a crime punishable by up to five years in prison and a fine of up to $10,000, effective August 1.

Kalshi, Polymarket, and the Commodity Futures Trading Commission (CFTC) challenged the law in federal court.

They argued that federally regulated prediction market contracts fall under the Commodity Exchange Act (CEA) and are subject to the CFTC's exclusive regulatory authority; therefore, Minnesota cannot ban them.

Judge Katherine Menendez issued a preliminary injunction blocking the law from taking effect while the lawsuit proceeds. A preliminary injunction is not a final ruling, but it indicates the judge found a high likelihood that the plaintiffs would succeed on the merits of the case and that the law's implementation could cause irreparable harm.

If the court ultimately rules that the Commodity Exchange Act preempts state bans, the decision could:

Strengthen the legal standing of CFTC-regulated prediction markets nationwide.

Make it much more difficult for individual states to ban federally regulated prediction market contracts.

It could encourage challenges to similar laws or enforcement actions in other states.

What does this not mean?

The court has not yet ruled on the merits of the case. The injunction is temporary.

The ruling does not automatically legalize all prediction markets. Whether a platform is protected depends on factors such as whether its contracts are regulated under federal commodities law or if it operates under a different legal framework.

Other legal disputes involving prediction markets—including questions regarding specific types of contracts or platform operations—remain unresolved.

Overall, this case is considered one of the industry's strongest court victories to date, as it suggests that federal commodities law may limit the ability of states to ban federally regulated prediction markets. Whether this principle sets a binding precedent will depend on the final outcome of the case and any potential appeals.