New Jersey asks Supreme Court to weigh in on prediction markets

New Jersey has asked the U.S. Supreme Court to decide whether states can police sports-related prediction market products, filing a petition after two federal appeals courts issued opposite rulings on the same legal question. The state is seeking clarification on the boundary between federal derivatives oversight and traditional state gambling laws, a fight that now touches platforms including Kalshi and Polymarket.

Why did New Jersey go directly to the Supreme Court?

New Jersey moved to the high court because the appeals courts have disagreed. One circuit has sided with state regulators and upheld restrictions on sports event contracts, while another has sided with the platforms and blocked state enforcement. That kind of split is the textbook trigger for Supreme Court review, because uniform national rules become impossible until the justices resolve the conflict.

The petition signals that New Jersey believes the lower-court ruling allowing prediction markets to offer sports products cannot stand alongside the ruling that lets states restrict them. Without Supreme Court intervention, identical platforms could face opposite outcomes depending only on which state a user lives in.

What are prediction markets and how did they get here?

Prediction markets let users buy and sell contracts whose payouts depend on the outcome of real-world events, from elections to sports games to inflation prints. The largest U.S.-regulated venue, Kalshi, operates under the supervision of the Commodity Futures Trading Commission, which classifies event contracts as swaps on exempt commodity exchanges. Polymarket runs an offshore platform and uses a separate blockchain-based settlement system.

Sports contracts became the focal point once Kalshi and smaller rivals started listing markets on NFL games, NBA games, and individual player performances during 2024 and 2025. State regulators in New Jersey, Nevada, Illinois, and elsewhere argued those products are wagers on sporting events, not financial hedges, and therefore violate state gambling and gaming laws.

The CFTC has historically taken the position that event contracts on sports are not swaps and can therefore be restricted by the agency itself, but the agency has not always acted on that view in court. That regulatory ambiguity left the field open for litigation.

What does the legal fight actually turn on?

The core question is whether the Commodity Exchange Act, the federal statute that grants the CFTC jurisdiction over swaps and futures, also blocks states from enforcing their own gaming statutes against prediction markets. Platforms argue that federal approval to list a contract preempts state law, similar to how a federally regulated futures product cannot be relabeled as gambling by individual states.

State regulators respond that sports event contracts are functionally identical to sports bets, which have always been regulated at the state level under the authority of gaming commissions. They point to the Unlawful Internet Gambling Enforcement Act of 2006 and a long line of case law treating wagering on games as a state concern.

A second question is whether the contracts are properly classified as swaps at all. The CFTC has issued guidance suggesting certain event contracts on sports and war do not fall within the agency's exclusive jurisdiction, opening the door for state action. Prediction market operators counter that the contracts hedge commercial risks for sportsbooks, advertisers, and media companies, giving them a non-gambling economic purpose.

Why does this matter now for traders and platforms?

Volume on sports-related prediction markets climbed sharply through 2025, with industry estimates suggesting monthly handle crossed nine figures on major U.S. Platforms. That growth made state pushback more urgent: gaming regulators watched revenue that historically flowed to licensed sportsbooks move to federally chartered exchanges.

For traders, the case will determine whether U.S. Users can keep accessing sports event contracts in states that oppose them. A Supreme Court ruling against the platforms could force Kalshi and peers to geo-block entire states, mirroring the patchwork that sportsbooks already navigate. A ruling for the platforms could open the door to a national market with one regulatory rulebook.

Token-based venues such as Polymarket face a different path. Even if SCOTUS sides with the platforms, offshore decentralized exchanges sit outside U.S. Jurisdiction, which is why enforcement against them tends to focus on U.S. Persons trading rather than on the protocol itself.

What is the market and regulatory context around the petition?

Prediction markets have spent the last two years transitioning from a niche election-tracking tool to a mainstream trading product. Election markets on Kalshi set monthly volume records in late 2024, and sports markets followed once the NFL season started that fall. By 2025, several traditional sportsbook operators had taken equity stakes in event-contract platforms or launched competing products of their own.

The legal landscape has tracked that growth. The CFTC opened a public comment period on sports event contracts in 2024, and multiple states have sent cease-and-desist letters or filed enforcement actions. Two federal district courts issued rulings in 2025 that diverged, which produced the appeals court split now in front of the justices.

New Jersey's filing also lands against the backdrop of a broader reassessment of how new financial products interact with gambling law. Prediction market lobbying groups have argued that sportsbooks themselves could be treated similarly if their products are reinterpreted as swaps, an outcome neither traditional gaming operators nor exchanges want.

What happens next and what should readers watch?

The Supreme Court is under no obligation to take the case. The justices will first ask the federal government, through the Solicitor General, for a recommendation, and will likely consider the petition at a conference later this term. Acceptance is more likely given the clean circuit split, but the court grants certiorari in only a small fraction of petitions each year.

If accepted, oral arguments would probably be scheduled for the 2027 term, with a decision by mid-2028. In the meantime, the circuit split means prediction market operators face conflicting duties depending on geography, and state regulators are likely to continue filing cases to test the boundaries.

Traders should watch for any state enforcement actions filed in the meantime, for the Solicitor General's filing, and for any congressional movement on event-contract legislation. A clean federal statute would shortcut the litigation, but so far no bill has gained serious traction on Capitol Hill.