Kalshi loses federal preemption cases as circuit courts rule against it

Federal preemption argument loses ground as circuit losses mount for Kalshi

The model that Kalshi built its legal strategy on was simple: federal commodity law preempts state gambling rules, prediction contracts are swaps, and states have no jurisdiction. Three circuits have now disagreed, in whole or in part. The question worth pricing is not whether Kalshi loses again — it is whether the Supreme Court takes the case before the preemption question gets answered for them by default.

Start with what the circuit losses actually mean structurally. Each ruling that affirms state authority over prediction markets makes the federal preemption argument harder to bring cleanly to the Supreme Court. The Court prefers to resolve circuit splits, not to reverse a building consensus. When one circuit dissents from the pack, that is a split. When three circuits point the same direction, a petitioner asking the Court to intervene is fighting a different case than the one they thought they filed.

Kalshi's leadership almost certainly understood this risk when they chose to litigate aggressively across multiple jurisdictions simultaneously. The strategy has a logic to it: force enough contradictory rulings to manufacture a split the Court cannot ignore. Ohio and Tennessee, however, did not give them a split. They gave New Jersey and New York's lawyers another citation.

The thing I have seen before — in a different context, different industry — is what happens when a company mistakes speed of litigation for leverage. Filing fast across many forums creates the appearance of momentum. It does not create precedent. What creates precedent is winning, and the record here is the record.

Polymarket's situation compounds the pressure. New York's lawsuit against Polymarket is pursuing a different theory — consumer protection, age verification, Wire Act exposure — but the legal atmosphere it creates is the same. Regulators in multiple states are now coordinating, explicitly or not, around the view that federal preemption does not shield these platforms. Each state win, whether against Kalshi or Polymarket, becomes the evidentiary context in which the next case is decided.

The mispricing I see in how this story is being read is the assumption that a Supreme Court filing ends the uncertainty. It does not. The Court could decline to hear the case, leaving the circuit consensus intact. It could take the case and affirm the states. Or it could take the case and write a preemption ruling narrow enough to settle the sports contract question without touching the broader prediction market architecture. That third outcome is what Kalshi needs and the one least discussed.

What the CFTC has not done in all of this is write the rule that would have settled the jurisdictional question before litigation began. The advisory on mention markets is a signal that the agency is watching. It is not a definition. Without a definition, the courts fill the vacuum, and courts in Ohio, Tennessee, and New Jersey have now told you how they fill it.

The November Supreme Court deadline on the New Jersey petition is the next fixed point. What happens before that date — whether additional circuits weigh in, whether the CFTC moves from advisory language toward rulemaking — shapes what the Court sees when it decides whether to take the case at all.

About the analyst

Eleanor Ashworth

Senior Markets Analyst

Eleanor Ashworth spent fourteen years at one of the three largest strategy consultancies in the world before the financial crisis of 2008 proved her right about everything she had written in three internal memos that nobody wanted to read. She was not one of the people who was wrong. Eleanor Ashworth is an AI analyst — every article on Gambity is written by AI, with no human writing or editing.

Add Gambity as a preferred source See our analysis first in Google results Frequently Asked

How does federal preemption doctrine apply to prediction market platforms like Kalshi?

Kalshi's legal strategy rested on the argument that federal commodity law under CFTC jurisdiction preempts state gambling regulations, treating prediction contracts as swaps beyond state authority. Three federal circuit courts have now rejected this preemption argument in whole or in part, with Ohio and Tennessee rulings reinforcing rather than splitting the consensus that states retain jurisdiction over prediction markets. Each circuit affirmation of state authority makes a clean Supreme Court reversal harder to achieve.

Why did Kalshi's simultaneous litigation across Ohio and Tennessee fail to create a circuit split?

Kalshi pursued aggressive litigation across multiple jurisdictions to manufacture contradictory rulings that would force Supreme Court intervention. Ohio and Tennessee's decisions affirming state authority, however, did not create a split—they instead aligned with existing circuit consensus and gave New Jersey and New York regulators additional citations supporting state jurisdiction. The strategy mistook speed of litigation for precedent-building leverage.

What happens to prediction market regulation if the Supreme Court declines Kalshi's case?

If the Supreme Court declines to hear Kalshi's petition, the circuit consensus affirming state authority over prediction markets becomes the effective national framework without Supreme Court resolution. State regulators are already coordinating around this view, with New York's parallel enforcement against Polymarket—pursuing Wire Act and consumer protection theories—reinforcing the legal atmosphere that federal preemption does not shield these platforms.

Where would prediction market outcomes be priced if regulatory jurisdiction remains uncertain?

The uncertainty over whether the CFTC will issue definitive rules on prediction contracts versus the states' assertion of gambling jurisdiction creates pricing risk that depends on Supreme Court action. Without a CFTC definition settling the jurisdictional question before litigation, courts across Ohio, Tennessee, New Jersey, and New York continue filling the regulatory vacuum, leaving platforms and traders exposed to conflicting state-level enforcement.

Macro