States should have legal authority to regulate prediction markets alongside federal oversight

What's this about?

People disagree about whether states should help control prediction markets. These markets let people trade on what may happen, such as an election.

What supporters say

• State and federal groups could share the work, making markets more open and safer.
• States could act on local gambling rules, false ads, age limits, and harm to people at risk.

What critics say

• Different state rules could split one large market into many smaller parts.
• Federal rules already give these markets one skilled system for trade, safety checks, and reports.

How to read this

The number of points on each side does not show who is right; strong proof matters more than many points.

The bottom line

The evidence favors a small state role, mainly for local harm and user safety. States should add to federal control, not take over markets that cross state lines.

States may help with gambling rules, ads, age limits, and harm to people at risk. Yet we are not sure that states can run the deep checks needed for market trade. One set of federal rules can also help markets work well across the country. So, states should have some legal power, but broad state control could cause trouble.

Prediction markets sit between financial trading and gambling, raising a difficult question: should states regulate them alongside federal authorities? The evidence supports a limited state role, but not unrestricted state control over nationally operating markets.

The case for

States can address concerns that federal financial regulation may not fully cover. Local authorities may be better placed to police gambling classifications, advertising, age restrictions, deceptive marketing and risks to vulnerable consumers. Those issues can differ from the federal government’s focus on derivatives-market integrity and the technical operation of exchanges. 1

The risks are not theoretical. Research and legal scholarship have identified concerns involving election integrity, market manipulation, thin trading, strategic behavior and contract design. A state role could help respond when those problems affect local institutions or consumers, even if federal regulators continue to oversee the market’s financial infrastructure.

Shared enforcement could also improve accountability. The Commodity Futures Trading Commission, or CFTC, oversees nationally operating derivatives platforms, including exchanges, intermediaries, reporting and surveillance. States could provide an additional channel for handling local misconduct without taking over those specialized federal functions. 2

This argument does not establish that state regulators are better at technical market surveillance. Nor does it show that every state restriction would improve market performance. It supports a supplementary role, particularly for consumer protection and conduct with a clear local impact.

The case against

The main concern is that broad state authority could split markets that operate across state lines. Prediction markets rely on consistent rules for contracts, clearing, reporting and surveillance. If states imposed different licensing systems, bans or compliance requirements, companies could face higher costs and identical contracts could receive different treatment in different places. That could create legal uncertainty and reduce market liquidity, although the available evidence is largely legal analysis rather than direct measurement of those effects. 3

Federal law already provides a specialized framework for the core functions of derivatives markets. The CFTC regulates exchanges, swap-trading facilities and intermediaries, with national standards covering market integrity, surveillance, reporting, exchange rules and customer protection. Broad state authority could duplicate those responsibilities or conflict with federal requirements without clear evidence that state intervention would produce better market results. 4

The legal boundary is also unsettled. A contract offered by a federally regulated platform might be treated by one state as a derivative and by another as gambling or prohibited event wagering. Questions about federal preemption—when federal law overrides state rules—therefore remain central. The existing materials identify the conflict but do not definitively resolve how particular event contracts should be classified.

The bottom line

The evidence conditionally favors a divided system, not either exclusive federal control or unrestricted state overlap. Federal regulators are better suited to supervise nationally integrated functions such as exchange operations, clearing, reporting and market surveillance. States have a credible role in areas such as fraud, advertising, age limits, gambling-related harms and conduct affecting local institutions.

That role should be limited and clearly defined. State rules should not contradict federal exchange standards, and lawmakers would need clear boundaries over jurisdiction, preemption and cooperative enforcement. The evidence is strong that both local consumer concerns and national market risks are real. It is weaker on the question of which institutional design works best, because there are no comparative studies measuring enforcement costs, liquidity, consumer outcomes or market performance under different state-federal arrangements. The claim is therefore supported, but only in its narrower form: states should retain bounded authority alongside federal oversight, not broad power over core derivatives functions.