1. Louisiana prediction markets lawsuit targets five platforms
Louisiana Attorney General Liz Murrill filed a lawsuit in state court on November 12, 2026, against Kalshi, Polymarket, Robinhood, Coinbase and Gemini. The state alleges that event contracts these platforms offer on sports, awards shows and elections violate Louisiana's gambling and sports wagering laws, and it is asking for a temporary restraining order and an injunction.
The filing turns a long-running standoff over Louisiana prediction markets into open litigation on two fronts. Kalshi and Polymarket had already taken the state to federal court before Murrill acted, and Kalshi answered the new state case almost immediately by asking a court for emergency relief of its own.
At the center of the dispute is a question that has followed the prediction market industry for years: when a platform lets customers buy a contract that pays out if a team wins a game or a candidate wins an election, is it running a federally regulated derivatives market or an unlicensed betting operation? Louisiana has made clear which answer it believes is correct.
2. What is Louisiana asking the court to do?
Louisiana wants the court to order the five companies to stop offering the disputed contracts to people in the state, and to do so quickly. The suit seeks a temporary restraining order, which can take effect within days, and an injunction that would keep the restriction in place while the case is decided.
That choice of remedy matters. Ordinary litigation can run for months or years before a final judgment, and during that time the contracts would remain available to Louisiana residents. By pressing for immediate relief, the state is trying to halt the activity it considers illegal before the broader legal questions are settled, rather than after.
Murrill has framed prediction markets as a vehicle for wagering on almost any subject imaginable, from the outcome of a football game to the winner of an entertainment award to the result of a political race. In the state's view, the fact that these wagers are packaged as tradable contracts and listed on financial platforms does not change what they are.
The complaint covers three broad types of contract: those tied to sporting events, those tied to awards, and those tied to elections. Each of these has become a significant category for the industry, and sports contracts in particular have drawn the attention of state gaming regulators because they compete directly with licensed sportsbooks.
3. Why the defendant list stands out
The five companies named in the suit are not all the same kind of business. Kalshi and Polymarket are dedicated prediction market operators whose core product is event contracts. Robinhood is a retail brokerage best known for commission-free stock and options trading. Coinbase and Gemini are cryptocurrency exchanges that have expanded into offering event contracts to their users.
Louisiana has chosen to treat all five as engaged in the same conduct. Rather than drawing distinctions based on how each company is licensed, what else it sells or how it structures its event contract business, the state has grouped them together on the basis of the product they make available to Louisiana customers.
This is the first time Louisiana has brought enforcement against several prediction market platforms in a single lawsuit. Earlier actions and warnings were directed at the category in general or at individual operators. Combining the companies in one filing signals that the state is targeting the activity itself, not any particular firm.
For Coinbase, Gemini and Robinhood, the inclusion is notable. These companies have built event contract offerings as one part of much larger businesses, and their presence in the case suggests that states are not inclined to give lighter treatment to diversified financial platforms simply because prediction markets are a side line for them.
4. Kalshi and Polymarket went to federal court first
The state lawsuit did not arrive out of nowhere. On October 23, 2026, Kalshi filed a preemptive suit in the U.S. District Court for the Western District of Louisiana, seeking to block the state from enforcing its gambling laws against Kalshi's contracts. Polymarket separately brought its own case in federal court.
Both companies rest their arguments on the Commodity Exchange Act, the federal statute that governs commodity futures and other derivatives and that gives the Commodity Futures Trading Commission (CFTC) authority over regulated exchanges. Their position is that event contracts traded on a federally regulated venue fall under this federal framework, and that state gambling laws are therefore preempted, meaning they cannot be applied to override it.
The sequence of events now looks like a race between court systems. The platforms moved first in federal court to head off state action. Louisiana then filed in its own state courts. Kalshi responded by seeking an emergency order to hold the state back while the competing cases move forward.
As of November 12, 2026, no court had issued a final ruling resolving any of the Louisiana disputes. Every central question, from whether the state can act at all to whether the contracts qualify as gambling, remains contested.
5. How Louisiana built its position on event contracts
The lawsuit follows several years of steadily firmer positions from Louisiana officials. In 2025, the Louisiana Gaming Control Board issued an advisory stating that sports event contracts amount to gambling under state law. That advisory put operators on notice that the state did not accept the argument that these products were outside its jurisdiction.
In 2026, Louisiana went further through legislation that widened the definition of unauthorized gambling and increased the penalties attached to it. The changes gave state authorities broader tools to pursue operators they consider to be offering illegal wagering, and they form part of the legal backdrop for the new suit.
Louisiana has a particular interest in how sports wagering is regulated. The state permits licensed sports betting through regulated operators that pay taxes and fees and follow consumer protection rules. From the state's perspective, prediction market platforms offering contracts on the same games without a state license are competing with that regulated system while avoiding its obligations.
Louisiana is also not acting in isolation. Other states have pursued their own enforcement against prediction market platforms, and the industry has responded with federal lawsuits of its own. What sets the Louisiana filing apart is its breadth, with five companies named in a single complaint.
6. The federal preemption question explained
Preemption is the legal doctrine that decides the case, and it explains why the companies were eager to be in federal court. Under the U.S. Constitution, valid federal law takes priority over conflicting state law. If Congress has given a federal agency exclusive authority over a field, states generally cannot regulate that field with their own rules.
The prediction market companies argue that the Commodity Exchange Act creates exactly that kind of exclusive federal regime for contracts traded on CFTC-regulated exchanges. If courts accept that view, Louisiana's gambling statutes would have little or no reach over the contracts at issue, regardless of how the state labels them.
Louisiana's position is that these products are gambling, a field that states have traditionally regulated themselves, and that federal derivatives law was never meant to strip states of the power to police sports betting and election wagering within their borders. If courts side with the state, Louisiana and other states pursuing similar actions would be on much stronger ground.
The outcome could reach well beyond Louisiana. A clear ruling on preemption from one court tends to influence how other courts approach the same arguments, and the companies involved operate nationally. A decision either way would shape how prediction markets can do business across the country.
7. What a restraining order would mean for Louisiana users
If Louisiana wins a temporary restraining order or an injunction, the five named platforms could be required to stop offering sports, awards and election contracts to users in the state while the litigation continues. For customers, that would mean losing access to those markets in Louisiana, potentially for an extended period.
For the companies, such an order would also carry broader weight. It would represent a court accepting, at least at a preliminary stage, that the state has a credible claim. That could encourage other states considering their own actions and add pressure on the industry's central legal argument.
A ruling for the platforms, on the other hand, would allow them to keep serving Louisiana customers and would strengthen their hand in parallel disputes. Either result at the early stage would not end the case, but it would set the tone for what follows.
8. What happens next in the Louisiana Kalshi fight
Several developments will determine the direction of the dispute in the coming weeks. The first is how the court responds to Kalshi's emergency request to restrain the state from enforcing its laws. The second is whether Louisiana succeeds in obtaining the temporary restraining order it has requested against the five platforms.
Beyond those immediate rulings, the federal cases brought by Kalshi and Polymarket will continue to move forward, and their progress could affect how the state court case proceeds. Courts will have to sort out how the overlapping federal and state cases relate to one another.
The decisive issue remains preemption. If the federal courts conclude that the Commodity Exchange Act governs these contracts, state gambling laws may offer Louisiana little room to act. If they conclude otherwise, Louisiana's lawsuit could become a template for states seeking to rein in prediction markets, and the industry's rapid expansion into sports and politics could face a far more restrictive future.