Washington AG Targets Prediction Markets: What It Means

Robert Harris

Hot Topic

April 10, 2026

2 Views

Washington State Attorney General Nick Brown has formally argued that prediction markets are illegal gambling, putting him on a direct collision course with federally regulated platforms and the Commodity Futures Trading Commission (CFTC). The dispute centers on whether event contracts, which let users bet real money on election results, sports outcomes, and economic indicators, fall under state gambling law or federal commodity law. The outcome could determine whether a multi-billion-dollar industry survives in one of America’s most populous states.

AG Nick Brown’s Legal Argument Against Prediction Markets

The Core of Brown’s Case: State Gambling Law vs. Federal Oversight

Attorney General Nick Brown, who took office in January 2025, contends that prediction markets operate as unlicensed gambling operations in Washington State. His argument rests on a straightforward reading of Washington’s gambling statutes: if you stake money on an uncertain outcome and stand to win or lose based on that result, you are gambling. Brown’s office has signaled it does not accept the federal framing that these platforms trade in “commodity contracts” rather than bets.

The platforms at the center of this dispute, primarily Kalshi and Polymarket, hold federal designations that allow them to offer event contracts under CFTC oversight. Kalshi, for example, received CFTC approval in 2023 to list political event contracts after a lengthy legal fight. Brown’s position is that federal designation does not override Washington’s sovereign authority to regulate gambling within its borders.

This is not a fringe legal theory. Several state attorneys general have historically asserted that federal commodity law cannot preempt state gambling prohibitions, and courts have not fully settled the question. Brown is essentially forcing a confrontation that the industry has tried to avoid since prediction markets began scaling aggressively in 2024.

What Prediction Markets Actually Are, and Why the Label Matters

Prediction markets allow participants to buy and sell contracts tied to the probability of a specific event occurring. If a contract pays $1 if a particular candidate wins an election, and you buy it for $0.60, you profit $0.40 if correct and lose $0.60 if wrong. Platforms like Polymarket processed over $3.7 billion in trading volume during the 2024 U.S. presidential election cycle alone, according to data cited by GamblingNews.com [1].

The legal classification of these transactions is everything. If they are commodity contracts, the CFTC governs them and states have limited authority to interfere. If they are gambling, states like Washington can ban them outright, fine operators, and pursue criminal charges against participants. Brown’s office is firmly in the second camp, and his argument carries weight because Washington’s gambling laws are among the broadest in the country.

For sports bettors familiar with the regulated market, the distinction feels almost absurd: you can legally bet on an NFL game through a licensed sportsbook in many states, but betting on which party wins a Senate seat sits in a legal gray zone that a state AG is now trying to paint bright red. The inconsistency is not lost on the industry or its critics.

Impact on Kalshi, Polymarket, and the Broader Prediction Market Industry

Platforms Face Potential State-Level Bans and Enforcement Actions

If Brown’s legal position prevails, Washington-based users could be blocked from accessing platforms like Kalshi and Polymarket entirely. Operators who continue serving Washington residents without a state gambling license would face civil and potentially criminal liability. Kalshi, which is incorporated in the United States and holds a CFTC designation as a designated contract market, has the most to lose from a precedent that allows states to override federal approval [1].

Polymarket operates differently: it is based offshore and technically restricts U.S. users, though enforcement of that restriction has been inconsistent. A Washington AG action would likely accelerate pressure on Polymarket to implement stricter geo-blocking for American users. The practical effect would be a fragmented national market where access to prediction markets depends entirely on which state you live in, mirroring the patchwork of sports betting legalization that followed the 2018 Supreme Court ruling in Murphy v. NCAA.

Smaller prediction market startups with less legal firepower than Kalshi would face an existential threat. Legal defense against a state AG is expensive, and the uncertainty alone could freeze venture capital investment in the sector. At least three prediction market startups raised Series A rounds in 2024, according to industry tracking by GamblingNews.com [1], and all of them now operate under a cloud of regulatory risk.

The CFTC’s Role and the Federal Preemption Question

The CFTC under its 2024 and 2025 leadership has taken a more permissive stance toward event contracts, approving Kalshi’s political event markets after years of resistance. The agency’s position is that properly designated event contracts are federal instruments and states cannot ban them. Brown’s challenge directly tests whether that federal shield holds up in court.

Legal scholars note that the Commodity Exchange Act does include a preemption clause, but its scope when applied to gambling-adjacent products has never been definitively ruled on by a federal appellate court. A Washington state court ruling against the platforms could create a circuit split that eventually reaches the Supreme Court. That process could take three to five years, leaving the industry in limbo throughout. For sports betting operators who spent years navigating state-by-state legalization, this regulatory uncertainty will feel painfully familiar. You can read more about how regulatory battles shape the betting market on our sports betting regulation tracker.

Prediction Markets vs. Licensed Sports Betting: The 2025 Regulatory Divide

Washington State is one of only a handful of states that has not legalized sports betting as of mid-2025, making it an especially hostile environment for any form of wagering on outcomes. The American Gaming Association reported that the U.S. legal sports betting market handled $119.84 billion in 2024, generating $13.71 billion in gross gaming revenue [2]. Prediction markets, by contrast, operate outside that tax and licensing structure entirely, which is part of what makes them politically vulnerable in states with strong gambling control frameworks.

The irony is sharp: Washington residents cannot legally bet on the Super Bowl through a licensed sportsbook, but until Brown’s intervention, they could theoretically trade on Kalshi’s NFL game contracts under the federal commodity umbrella. Brown’s argument closes that gap by treating both activities the same way under state law. Whether that consistency is principled regulation or regulatory overreach depends heavily on which side of the debate you occupy.

Historically, states have successfully asserted gambling authority over products that federal agencies tried to classify differently. The Wire Act disputes of the 2010s showed that federal and state interpretations of gambling law can diverge sharply and stay diverged for years. Prediction market operators should study that history carefully, as explored in our guide to U.S. gambling law history.

What Washington’s AG Fight Means for Sports Bettors and Racing Fans

For sports bettors and horse racing enthusiasts, the Washington AG’s campaign against prediction markets is more than a distant legal skirmish. Prediction markets have increasingly listed contracts on sporting events, including race outcomes, championship winners, and even individual game scores. If Brown’s argument succeeds and spreads to other state AGs, those markets disappear as an alternative wagering venue for fans in affected states.

The deeper implication is about market structure. Prediction markets offer something traditional sportsbooks do not: a peer-to-peer pricing mechanism where the odds reflect collective participant judgment rather than a bookmaker’s margin. Some sharp bettors use prediction market prices as a reference point when evaluating sportsbook lines. Losing access to those markets, even indirectly, removes a useful data signal from the betting toolkit. Our analysis of prediction market odds vs. sportsbook lines breaks down exactly how these two pricing systems compare for major sporting events.

Racing bettors in particular should watch this case. Horse racing operates under its own federal carve-out, the Interstate Horseracing Act of 1978, which gives it unique legal protections that prediction markets do not enjoy. If prediction markets get classified as gambling and shut down in Washington, it reinforces the argument that racing’s federal framework is a competitive advantage worth protecting. You can explore how racing’s legal structure compares to other betting formats in our racing betting legal guide.

Key Takeaways

• Washington AG Nick Brown, who took office in January 2025, argues prediction markets constitute illegal gambling under Washington State law, regardless of their federal CFTC designation.
• Kalshi received CFTC approval in 2023 to list political event contracts, making it the primary target of any state-level enforcement action.
• Polymarket processed over $3.7 billion in trading volume during the 2024 U.S. presidential election, illustrating the scale of the industry now under legal threat [1].
• The U.S. legal sports betting market handled $119.84 billion in 2024 according to the American Gaming Association, dwarfing prediction markets but operating under a completely different legal framework [2].
• Washington State has not legalized sports betting as of mid-2025, making it one of the most restrictive gambling jurisdictions in the country and a logical starting point for AG action.
• A successful state-level challenge could trigger a federal preemption battle that reaches appellate courts and potentially the Supreme Court, a process that could take three to five years.
• At least three prediction market startups raised Series A funding rounds in 2024, all of which now face heightened regulatory risk from state-level enforcement actions [1].

Frequently Asked Questions

The Bottom Line

Washington AG Nick Brown has drawn a clear line: in his state, staking money on an uncertain outcome is gambling, full stop, and no federal commodity designation changes that. His argument is legally coherent, politically popular in a state that has resisted sports betting legalization, and strategically timed to catch prediction markets at their moment of maximum growth and minimum regulatory armor. The industry grew fast precisely because it operated in a space that regulators had not yet clearly claimed. Brown is claiming it now.

The platforms will fight back, and the CFTC may intervene on their behalf. But the fight itself is costly, slow, and uncertain. Every month of litigation is a month where investors hesitate, users in Washington lose access, and other state AGs watch to see whether Brown’s approach holds up. If it does, expect a wave of similar actions from attorneys general in other states that have resisted gambling expansion. The prediction market industry’s biggest risk was never a bad trade. It was always a determined regulator with a straightforward argument and a state law broad enough to support it.

For sports bettors and racing fans, this case is a reminder that the legal architecture of wagering in America remains fragile, contested, and subject to rapid change from a single determined official. Watch this case closely. It will not stay in Washington.

Sources

1. GamblingNews.com – Reporting on Washington AG Nick Brown’s legal arguments against prediction markets, platform volume data, and startup funding activity.
2. GamblingNews.com – U.S. legal sports betting handle and gross gaming revenue figures for 2024, sourced from American Gaming Association data.