Louisiana has moved against several of the largest names in trading, taking the position that prediction markets function much like gambling. On November 12, 2026, Attorney General Liz Murrill filed a lawsuit in state court against Kalshi, Polymarket, Robinhood, Coinbase, and Gemini, alleging that the platforms are violating Louisiana's gambling and sports wagering laws by offering event contracts tied to sports, awards, and elections. In this context, prediction markets are venues where participants trade contracts whose payouts depend on whether a specified real-world outcome occurs.

Kalshi has not waited for formal service. The company has already sought an emergency court order against the state, setting up a direct fight over which level of government actually gets to regulate these products.

What Louisiana Is Asking For

The suit seeks an immediate temporary restraining order and an injunction. In practical terms, the state wants the platforms to stop offering the contracts in question, and it wants that to happen quickly rather than after years of litigation. The two mechanisms differ in scope: a temporary restraining order is a short-term emergency measure granted on an expedited timeline, while an injunction would bar the conduct while the case proceeds. Murrill emphasized that prediction markets could allow people to wager on a wide range of subjects.

The lineup of defendants is notable on its own. Kalshi and Polymarket are dedicated prediction-market operators, Robinhood is a retail brokerage, and Coinbase and Gemini are cryptocurrency exchanges. Louisiana is effectively treating all five as participants in the same activity, regardless of how each company describes its own business.

The filing also marks the first time Louisiana has consolidated its enforcement effort against a broad group of prediction-market platforms into a single lawsuit. Rather than pursuing companies one at a time, the state is targeting the category as a whole.

The Federal Versus State Showdown

Kalshi filed a preemptive federal suit on October 23, 2026, in the Western District of Louisiana, and Polymarket has filed in federal court as well. Both companies argue that the Commodity Exchange Act, the federal law governing commodities and derivatives trading, preempts state law. That statute is administered by the Commodity Futures Trading Commission, the agency that oversees futures and derivatives trading in the United States, and preemption is the legal doctrine under which valid federal law displaces conflicting state rules. The companies have also pointed to regulatory changes that have been in effect since August 2026 in support of that argument.

The shape of the dispute is therefore clear: the platforms went to federal court first to argue the state has no authority, while the state has now gone to its own courts to argue that it does. Kalshi is additionally seeking an emergency order to keep the state at bay while that question gets sorted out.

As of November 12, 2026, no final rulings have resolved any of the cases filed in Louisiana, and everything remains contested.

How Louisiana Got Here

The state's position did not emerge overnight. In 2025, the Louisiana Gaming Control Board issued an advisory stating that sports event contracts constitute gambling under state law. Louisiana then tightened its own rules this year, as new legislation passed in 2026 expanded the definitions and penalties related to unauthorized gambling activity.

Louisiana is also far from alone. Active enforcement actions against similar platforms have been reported in at least 12 other states as of November 2026. The state is joining a crowded field, though its decision to name five companies in one filing stands out — and it means the same category of contracts is now being tested against a dozen or more state gambling regimes at the same time.

What This Means for the Platforms and Their Users

The most immediate stakes are operational. If Louisiana wins its restraining order or injunction, the named platforms could be forced to stop offering sports, awards, and election contracts to users in the state, at least while the broader case plays out.

The inclusion of the crypto exchanges merits particular attention. Coinbase and Gemini being named alongside dedicated prediction-market operators suggests that states are not drawing a meaningful distinction based on the type of platform.

The key developments to track are the response to Kalshi's emergency request, any ruling on Louisiana's restraining order, and how the federal suits filed by Kalshi and Polymarket progress in parallel. The preemption question is the hinge: if federal courts agree that the Commodity Exchange Act controls, state gambling statutes may have limited reach over these contracts. If they do not, Louisiana and the at least 12 other states taking action could hold a much stronger hand.