The result and the irony
The 3 November US midterms gave Democrats both chambers of Congress, according to the reporting reviewed for this article. The result was not a surprise to the prediction markets: Kalshi and Polymarket had priced a Democratic sweep as the likely outcome before the votes were certified.
That is the irony at the center of the story. An industry that sold itself as a better information market correctly priced its own political risk, and then became a target of the winners. The product that predicted the election is now the product the new majority wants to regulate.
Kalshi said its election-related markets traded more than $2.5 billion, roughly twice the volume of the entire 2024 election cycle. The company's CEO said its favored candidate won 479 of the first 487 races called, about 98%. Those numbers are marketing and evidence at the same time: they show the product works as a forecasting market and that it is large enough to matter politically.
The political response arrived quickly. Senator Jeff Merkley, a long-time critic, said the time to legislate on prediction markets had arrived. Representative Maxine Waters, who is seeking the House Financial Services chair, promised to target predatory platforms, including prediction markets.
A congressional majority is not a statute. The article below separates the political signal from the legal instruments: hearings, legislation, appropriations, the CFTC, the states and the Supreme Court. The signal is real; the timing is not automatic.
The growth numbers
The market grew faster than the rules. Artemis data cited in the reporting put weekly prediction-market volume at about $5 billion at the start of 2026 and more than $30 billion by late October. October alone reached $123.3 billion, the first month above $100 billion, with Kalshi holding roughly 80%.
The valuation followed the volume. Kalshi announced a $1 billion raise at a $40 billion valuation on 29 October, led by Sequoia and Wellington. Polymarket was reported to be raising at a much larger valuation, with 1789 Capital, an investment firm linked to Donald Trump Jr., among the investors.
Those numbers explain why Congress cares. A product with $100 billion in monthly volume is no longer a niche experiment. It is a market with retail participants, institutional money, media partners and political exposure.
They also explain why the states care. A sports event contract sold nationwide can generate revenue that a state cannot tax and activity that a state cannot license. The federal-state conflict is not only about whether the product is gambling; it is about who gets to decide and who gets paid.
What Congress can do
Congress can hold hearings, request documents, subpoena witnesses, attach riders to appropriations bills and pass legislation. Each tool has a different speed and a different legal effect.
A hearing does not change the law. It changes the public record and the pressure on the regulator. A former Wall Street regulator quoted in the reporting said the soft constraints of hearings and investigations are often underrated. The hard constraint of legislation is often overrated.
Legislation is harder. Merkley and Representative Jamie Raskin introduced a bill in March 2026 that would ban event contracts on elections, sports, war and government actions. Even if it passed both chambers, the President could veto it. A veto override requires two-thirds of both chambers.
Appropriations may be the sharper tool. Congress cannot remove the CFTC chair, but it can attach language that limits how the agency spends money on litigation or rulemaking. A rider can constrain the agency without a standalone prediction-market bill.
The practical question is not whether Congress can pass a bill. It is whether Congress can change the CFTC's incentives before the Supreme Court changes the legal landscape.
The state war
The states are not waiting for Congress. At least fifteen states have introduced prediction-market legislation, according to the reporting, and several have sued Kalshi or opened enforcement files.
Utah's attorney general brought criminal charges against Kalshi and two co-founders. Oregon sued Kalshi and sought taxes. California's federal court issued a preliminary injunction against Kalshi's sports contracts on two tribes' lands. New Jersey petitioned the Supreme Court.
The legal theories differ. Some states say the contracts are sports bets under state gambling law. Some say the platform is an unlicensed operator. Some say the product violates tribal exclusivity. The common thread is that the states do not accept the CFTC's exclusive-jurisdiction argument.
The state-law dossier tracks the mechanisms. The California page carries the state record. The prediction-market cases are a separate layer from the sweepstakes statutes, but the federalism argument travels.
The Supreme Court
The fastest legal track is not Congress. It is New Jersey's petition for certiorari, filed on 2 September 2026 after the Third and Ninth Circuits split. The Third Circuit held that the CFTC has exclusive jurisdiction over sports event contracts; the Ninth Circuit held that the contracts are class III gaming when purchased on tribal land.
The Court's docket shows eleven amicus briefs supporting New Jersey, including 39 states and the District of Columbia, 145 tribes and tribal organizations, the NFL, former CFTC chair Gary Gensler and former Senator Christopher Dodd. Kalshi's response was originally due 9 November; the Court extended it to 7 December.
The timing means the Court is unlikely to decide whether to hear the case before early 2027. A grant, a denial or a summary decision would change the legal map. A denial would leave the circuit split in place; a grant would put the federal-preemption question at the center.
The congressional election matters because it changes the political environment around the case. It does not change the docket. The justices will decide the legal question, not the election result.
The CFTC
The CFTC is the federal regulator at the center of the conflict. It has sued ten states to defend its exclusive jurisdiction over event contracts. It also brought a civil case against a US Army sergeant accused of trading on classified information, and it is reported to be re-examining whether Polymarket violated its 2022 settlement.
The agency has five commissioner seats; only chair Michael Selig is currently in office, according to the reporting. Members of Congress have questioned whether a trimmed agency can supervise a market that grew from $5 billion to $30 billion in weekly volume in less than a year.
That staffing gap is a vulnerability. A hearing can pressure a single chair. An appropriations rider can limit the agency's litigation budget. A court can overrule its jurisdiction. The agency's position is strong on paper and thin in resources.
The CFTC's own conduct is not one-sided. It has defended the federal framework and investigated insider trading. The political fight is not a simple story of a captured regulator; it is a fight over who owns the market.
The insider-trading problem
The first problem is information asymmetry. Prediction markets allow trading on almost any event, and people with non-public information have an advantage. The DOJ's case against Sergeant Gannon Ken Van Dyke is the clearest example: he was accused of using classified information about the operation to capture Nicolás Maduro to trade about $33,000 on Polymarket and make more than $400,000.
It was the first criminal insider-trading case involving prediction markets, according to the reporting. The case matters because it shows the product can be used to monetize secrets, not only to forecast public events.
The structural data is also troubling. ACDC found that the top 1% of wallets contributed about 70% of the volume in Polymarket's congressional-election markets, and that 80% of the markets had fewer than 100 participating wallets. A thin market is easier to move and easier to exploit.
The platforms say they monitor suspicious activity. The record shows the problem is not hypothetical. A market that pays for information will attract people who have information before the public does.
The retail-loss problem
The second problem is who loses. Galaxy Research analyst Will Owens studied about 2.9 million manually paced accounts on Polymarket's international site and found that 69.2% lost money, for combined losses of about $339 million. Sports-focused traders had the lowest profitable share, at 25.1%.
The platforms spend heavily on marketing. Polymarket reportedly pays LeBron James $15 million a year to promote football-related markets. The marketing reaches the audience with the weakest results, which is the opposite of the information-market story.
That does not make every trader a victim. A market can be zero-sum and still useful. But the distribution of gains matters for the policy debate: if the product is sold as a forecasting tool and most retail users lose, the consumer-protection argument is stronger.
The same question applies to sweepstakes. A product can be lawful and still produce poor outcomes for most players. The site's terms guide is a reader-level response to that gap.
What the election changes
The election changes the oversight environment, not the legal rule. A Democratic Congress can hold hearings, request documents, attach riders and pass a bill. It cannot unilaterally overturn a Supreme Court decision or remove a CFTC chair.
The election also changes the political risk for the platforms. Kalshi and Polymarket are now associated with a president's family and a administration that supported them. A Democratic Congress has an incentive to investigate that relationship, even if the legal case is separate.
The states remain the faster enforcers. A state attorney general can file a case without Congress. A tribe can seek an injunction. A court can issue an order. The federal election is one variable in a multi-front conflict.
The reader should not treat the election as a ban. It is a signal that the oversight risk has increased. The legal record is still the docket, the statute and the order.
What it means for sweepstakes readers
Kalshi is a prediction market, not a sweepstakes casino. The midterm story does not change the dual-currency rules, the state tiers or the operator lists this site tracks. A sweepstakes reader should not read it as a new ban or a new permission.
The overlap is structural. Both products depend on geolocation, terms and state-by-state access. Both can be blocked by a platform, a payment processor or a state. Both can produce a gap between a public statement and the cashier.
The coverage matrix records the operator lists. The state-law hub records the legal mechanisms. The prediction-market cases are a separate legal track, but the federalism argument is relevant to anyone who operates across state lines.
A reader should use the record, not the headline. The election is a political event; the state page is the legal record; the terms are the account record.
The business behind the politics
Prediction markets make money from volume, not from being right. Kalshi's revenue comes from trading fees; Polymarket's model has moved toward fees and partnerships. The more people trade, the more the platform earns, regardless of whether the forecast is accurate.
That model explains the marketing. A market with $100 billion in monthly volume needs attention, liquidity and a story. The election was the story. The celebrity partnerships and the media deals are customer acquisition.
The model also explains the political vulnerability. A product that earns from volume has an incentive to expand into the most engaging events: elections, sports, war and government actions. Those are exactly the events the legislation would exclude.
The companies say they are information markets. The critics say they are gambling with a better vocabulary. Both claims can be true at the same time, which is why the legal fight is so hard.
The CFTC's jurisdiction
The CFTC's argument is that event contracts are commodities and the agency has exclusive jurisdiction over them. The states' argument is that sports event contracts are bets and the states have always regulated gambling.
The Third Circuit accepted the CFTC's position. The Ninth Circuit accepted the states' position when the contracts are purchased on tribal land. The split is the reason the Supreme Court is likely to take the case.
A Supreme Court decision could do one of three things: affirm the CFTC's exclusive jurisdiction, affirm the states' authority, or craft a narrower rule that distinguishes among contract types and locations.
The congressional election does not change the legal question. It changes the political pressure on the agency and the odds of legislation if the Court leaves the issue open.
The state cases in detail
Utah's criminal case is the most aggressive. The state charged Kalshi and two co-founders, not only the company. A criminal charge against founders raises the personal stakes and the political cost.
Oregon's tax case is the most fiscal. The state sued for taxes it says are owed on sports event contracts. A tax theory can survive even if the gambling theory fails.
California's tribal injunction is the most local. The court protected two tribes' exclusive gaming rights on their lands. The order is narrow, but it shows a federal court can enjoin the product without a statewide statute.
New Jersey's petition is the most national. The state asked the Supreme Court to resolve the circuit split. The amicus briefs show the issue reaches states, tribes, sports leagues and former regulators.
The court timeline
New Jersey filed its petition on 2 September 2026. The Court called for a response, then extended Kalshi's deadline from 9 November to 7 December. The extension is routine, but it pushes the decision into 2027.
If the Court grants the petition, the briefing and argument could take most of 2027. If it denies, the circuit split remains and the states continue on their own.
A grant would not automatically resolve the issue. The Court could affirm, reverse or remand. The scope of the decision would depend on the question presented.
The timeline matters for Congress. A hearing can happen in weeks; a bill can take months; a Supreme Court decision can take a year. The political system may move faster than the legal system, or it may not.
The reader's guide
If you use a prediction market, read the contract terms, the resolution rules and the fee schedule. A market's probability is not a guarantee; it is a price.
If you use a sweepstakes casino, read the state list and the terms. The midterm story does not change the state tier. The coverage matrix is the record.
If you are a creator or affiliate, check the platform rules. TikTok Shop's policy and the state laws are separate layers. A prediction market promotion can raise different issues from a sweepstakes promotion.
If you are a reader of political news, separate the election result from the legal instruments. A majority is not a statute; a hearing is not a ruling; a petition is not a decision.
The final analysis
The midterms gave the prediction-market industry a more hostile Congress and a more visible profile. The industry's own numbers made the case for oversight: $2.5 billion in election volume, $123 billion in October and a $40 billion valuation.
The legal fight is still in the courts and the states. Congress can investigate, legislate or constrain the CFTC's budget. The Supreme Court can resolve the circuit split. The states can enforce their own gambling laws.
The most likely outcome is not a clean ban or a clean permission. It is a patchwork: some states open, some closed, some litigating, and a federal regulator defending a jurisdiction it may not have the resources to exercise.
That patchwork is the same structure this site tracks for sweepstakes. The mechanism differs, but the reader's problem is familiar: the headline is national, the record is local, and the account is personal.
The regulatory gap
The CFTC has one commissioner and a market that grew from $5 billion to $30 billion in weekly volume in less than a year. That is the resource gap at the center of the story.
The agency can bring cases, issue rules and defend its jurisdiction. It cannot supervise every contract, every platform and every state case with the current staff. The reporting says the agency has five seats and one occupant.
Congress can fund the agency or constrain it. A Democratic Congress is more likely to hold hearings than to increase the CFTC's budget for prediction-market oversight. The political incentive runs toward scrutiny, not expansion.
The gap is not a reason for the states to stop. It is a reason the states will keep acting.
The political money
The industry's political spending is part of the story. Kalshi and Polymarket have invested in lobbying, partnerships and public affairs. The reporting links Polymarket to 1789 Capital and Donald Trump Jr., and Kalshi to a broad investor group.
That spending creates a perception problem. A Democratic Congress can investigate the relationship between the platforms and the administration even if the legal case is separate. The appearance of influence is a political fact.
The spending also creates a defensive problem. A company that is publicly associated with one party has less access to the other. The midterm result changed which party controls the committees.
The industry's best defence is the product's accuracy. The election numbers support that defence. They do not neutralize the consumer-protection and insider-trading arguments.
The state of play
The legal state of play is a split: the Third Circuit for the CFTC, the Ninth Circuit for the states, and a Supreme Court petition pending. The political state of play is a Democratic Congress and a Republican administration.
The regulatory state of play is a single CFTC chair defending exclusive jurisdiction while investigating insider trading and re-examining a settlement.
The market state of play is a $40 billion valuation, $100 billion monthly volume and a retail base that mostly loses.
The reader should hold all four pictures at once. A single headline will miss at least one.
The bottom line
The midterms did not ban prediction markets. They increased the oversight risk and gave the industry a more powerful opponent in Congress.
The fastest legal track is the Supreme Court, not the House. The fastest enforcement track is the states, not the CFTC.
The product's growth is real, and so is the consumer-protection problem. A market can be accurate and still be a bad deal for most retail users.
The reader should use the record: the docket, the statute, the state page and the terms. The election is context, not a legal instrument.
The precedent
The closest precedent is sports betting. The Professional and Amateur Sports Protection Act banned state-authorized sports betting outside Nevada until the Supreme Court struck it down in 2018. States then legalized it one by one.
Prediction markets are moving in the opposite direction: a federal agency is defending national permission while states try to close the product. The sports-betting precedent does not map cleanly.
The other precedent is online poker. The Wire Act interpretation, the 2011 DOJ opinion and the state compacts produced a patchwork that still varies by state. A prediction-market patchwork would look similar.
The precedent matters because it tells the reader what a settlement might look like: not a single national rule, but a set of state-by-state permissions and federal enforcement priorities.
The international angle
Prediction markets are not only a US product. Polymarket's international site serves users outside the United States; Kalshi has explored international expansion. The US election result affects the home market, not the entire business.
The international angle also affects enforcement. A platform can serve a US state through an offshore entity, and a state can struggle to reach it. The geolocation and payment layers become the enforcement point.
The same problem appears in sweepstakes. An operator can be offshore and still market to a US state; the state's remedy is the payment rail, the platform or the brand. The coverage matrix records the commercial response.
The reader should not assume that a US election resolves an international product. The legal map is multi-jurisdictional.
The conclusion
The midterms gave prediction markets a new oversight risk, not a new legal rule. Congress can investigate and legislate; the Supreme Court can resolve the circuit split; the states can enforce.
The industry's growth numbers are impressive and politically dangerous. A product that can price an election is a product that can attract the attention of the people who win it.
The reader should use the record, not the headline. The docket, the statute, the state page and the terms are the instruments.
The next move is likely to be a hearing, a brief or a state case, not a single national ban.
The hearing scenario
A House Financial Services hearing is the most likely first move. It would put the CFTC chair, the platforms and the critics in the same room. It would create a public record without changing the law.
The hearing could focus on insider trading, retail losses or the federal-state conflict. Each frame produces a different witness list and a different political story.
The industry would prefer a hearing on innovation and market accuracy. The critics would prefer a hearing on consumer harm and election integrity. The committee controls the frame.
A hearing is a signal, not a statute. The reader should watch the documents and the follow-up legislation, not only the clips.
The state enforcement
The states are the fastest enforcers. A state attorney general can file a case, issue a subpoena or seek an injunction without waiting for Congress.
The state cases also create the record that Congress can use. A criminal charge in Utah, a tax suit in Oregon and a tribal injunction in California are evidence for a hearing.
The states are not a single actor. Some have licensed markets, some have tribal compacts, some have broad gambling laws. The prediction-market cases will produce different outcomes.
The patchwork is the likely future, not a national rule.
The final test
The reader should ask three questions. Is there a legal instrument? Is there a regulator or court? Is there a state list or contract term?
If the answer is no, the story is political, not legal. If the answer is yes, read the instrument before repeating the headline.
The midterms are a political event. The docket is the legal record. The two should not be collapsed.
That is the test for this story and for the next one.
The reader's record
The reader should keep the docket number, the state case name, the statute and the contract terms. Those are the records that survive the news cycle.
A headline can change the mood. A docket entry changes the case. A statute changes the law. A term changes the account.
The prediction-market story is a good example because it has all four layers at once. The reader who can separate them is harder to mislead.
The last word
The midterms did not settle the prediction-market question. They made it more political and more visible.
The legal question is still with the courts, the states and the CFTC. The reader should follow those records, not the election coverage.
That is the story after the story.
The oversight calendar
The next dates are the Supreme Court response on 7 December, the 2027 session calendar, the state cases and the CFTC's own investigations.
The reader should watch the response, the cert grant or denial, the committee schedule and the state dockets.
The election is over. The oversight is beginning.
The close
Prediction markets are now a political product as well as a financial one. The midterms made that clear.
The reader who wants the legal answer should read the docket. The reader who wants the market answer should read the terms.
The two records are different, and the story is not finished.
The last number
The number that matters most is not the $40 billion valuation or the $123 billion month. It is the 69.2% of Polymarket accounts that lost money in the Galaxy study.
A market can be accurate and still be a bad deal for most users. The policy debate will eventually have to confront that gap.
The prediction-market story is not only about whether the product is legal. It is about whether the product is good for the people who use it.
That is the question the next hearing should ask.
The last check
The reader should check the date on every claim. The election was 3 November. The article was reported on 9 November. The Supreme Court response is due 7 December. The next Congress takes office in January.
The dates separate the political event from the legal deadline. A story that ignores them will confuse a result with a rule.
That is the discipline this article asks of its reader.
The final count
One election, two chambers, three branches of pressure and a product with $100 billion in monthly volume. The story is bigger than a single bill.
The reader who follows the docket, the state cases and the terms will know more than the headline. That is the point.
The closing note
The midterms are a beginning, not an ending. The prediction-market story will be written in hearings, briefs, state complaints and contract terms.
The reader should follow those records, not the horse race.
The last paragraph
A prediction market is a price, not a prophecy. A congressional majority is a power, not a statute. A Supreme Court petition is a question, not an answer.
The reader who keeps those three sentences apart can read the next headline without being fooled, and can check the record when the next headline arrives.
How this report was built
The primary reporting reviewed for this article is ChainCatcher's 9 November analysis, which cites Politico, Artemis, the Wall Street Journal, CNBC, Reuters, Galaxy Research and ACDC. The article supplies the election result, the volume figures, the congressional quotes and the Supreme Court timeline.
The report does not treat the election result as a legal finding. It separates the political signal from the CFTC litigation, the state cases and the Supreme Court petition. It also does not treat the prediction-market story as a sweepstakes story; the products are different.
What could not be verified: the final certified election results, the individual congressional statements beyond the reporting, the CFTC's internal staffing and the outcome of the Supreme Court petition. Those records will be updated when they are public.
Sources
Primary record, 6 sources
- ChainCatcher — Democrats sweep both chambers, 9 November 2026chaincatcher.com
- Politico — prediction-market oversightpolitico.com
- Artemis — prediction-market dataartemis.ai
- Kalshi — election volume statementkalshi.com
- Supreme Court docket — New Jersey v. Kalshisupremecourt.gov
- State law and bans: the authority dossier