Imagine scrolling through social media during an election season and seeing a well-known political figure share a chart that seems to prove something shocking about the integrity of the vote. It looks like an independent observation, a helpful clue about what is really happening behind the scenes. It might actually be a paid advertisement. That basic concern, so familiar to anyone who has watched modern digital politics, is what prompted U.S. Senators Alex Padilla and Mark Warner to send letters on August 26 to Polymarket and Kalshi, two popular prediction market platforms. With the midterm elections just 69 days away, the senators said they were “seriously alarmed” that these companies were paying social media influencers to spread unreliable and false information about elections. Padilla, a California Democrat who serves as the ranking member of the Senate Rules and Administration Committee, and Warner, a Virginia Democrat and vice chairman of the Senate Intelligence Committee, made clear that this was not a quiet policy suggestion. They were demanding that the platforms end paid influencer relationships tied to false claims about U.S. elections, and they wanted detailed answers about how the companies select, pay, and supervise the people who represent them online. The letters did not have to be long. They simply had to put the platforms on notice that elected officials were watching, that voters were watching, and that the practice of using paid personalities to manufacture political confidence—or, more often, distrust—was no longer going to be ignored. In a political environment already drowning in disinformation, the senators’ intervention was a shot across the bow of an industry that has often operated in the twilight between finance, entertainment, and news.
Prediction markets are not new, but they have become increasingly prominent in American politics. Websites such as Polymarket and Kalshi allow users to buy and sell contracts tied to real-world events, including the likelihood that a candidate will win an election or that a piece of legislation will become law. The prices of those contracts are presented as probabilities, which can feel crisp and objective: 70% chance of one outcome, 30% chance of another. But the probabilities are not generated by neutral scientists or independent pollsters. They are generated by the combined bets of users, many of whom have strong political opinions and financial incentives of their own. When an influencer shares a screenshot of a falling number, they are not sharing a fact about the world; they are sharing a snapshot of speculative money moving through a betting market. The senators worried that when these influencers are paid by the platforms themselves, the line between reporting and promotion disappears. Instead of an honest financial signal, viewers get a manufactured one, designed to make a political point and drive traffic to a trading app. More troubling, the senators argued, is that the platform’s own rules against fraud and market manipulation can be undermined by the very people the platform hires. If an influencer is paid to create buzz around a market, then the odds cease to reflect organic opinion. They reflect the influence of money that has been deliberately deployed. That is why the letters specifically invoked President Trump’s baseless attacks on election integrity. Paid influencers, the senators suggested, were amplifying those attacks by presenting odds movements as evidence of corruption. For example, if a bill seems doomed, an influencer might suggest that the election system is rigged, when in reality the odds may simply reflect the political arithmetic in Congress. The result is a feedback loop: influencers get paid to create viral content, platforms get new users, and the public gets another layer of confusion in an already chaotic information environment. That confusion matters because markets work only when people trust the information embedded in prices. If that trust is broken, the entire enterprise loses meaning.
To make their case, the senators pointed to two concrete episodes. The first happened in July. A series of influencers, including former Republican congressman Matt Gaetz, posted “paid partnership” content linking to Polymarket and Kalshi charts. The charts showed the odds of the SAVE Act passing falling to record lows. The accompanying commentary, the senators said, undermined confidence in elections or advocated for the legislation in ways that blended advertising with political spin. Some of those posts were eventually removed after being flagged for potential violations of X’s paid-partnership policy, which bars political content in sponsored posts. Others remained online, visible to anyone who happened to stumble upon them. The second episode took place in June. According to the senators, influencers who were under contract with both companies spread false conspiracy theories about California’s elections in posts clearly marked as paid partnerships. Those posts reached millions of views before they were taken down, and the removals happened only after news outlets began covering the story. The timing is important. The posts did not linger because no one saw them; they lingered because the platforms did not review them in time. By the time the offending content was pulled, it had already shaped the online conversation, planted seeds of doubt, and reinforced whatever suspicions viewers already had. The senators did not accept the companies’ likely explanation that these were isolated mistakes. Instead, they called it a pattern: paid influencers were being used as a distribution channel for exactly the kind of misinformation that undermines public trust in democratic institutions. The fact that some posts carried the label “paid partnership” did not make things better. If anything, it made them worse, because it showed that the platforms were willing to fund and amplify content while an election season was in full swing, with no meaningful editorial controls in place to prevent harmful falsehoods from going viral.
The letters were not merely rhetorical. Along with the demand to change course, they included a list of questions that the platforms had to answer by September 4. The senators wanted to see standard paid-influencer contracts and payment ranges, so they could understand how much money was changing hands and what obligations influencers had to disclose their sponsorship. They asked for the companies’s vetting criteria, to learn whether platforms had any system for checking an influencer’s history of spreading misinformation. They asked for any policies governing election-related content and misinformation, to determine whether the companies had clear rules in place before they started paying creators. Most pointedly, they asked whether the platforms considered spreading election disinformation to be a violation of their own rulebook provisions on fraud and market integrity. This is not a small legal question. Prediction markets often claim that they are self-policing because users have a financial incentive to be accurate. But if a platform is paying influencers to make false claims that manipulate market prices, the platform itself becomes a source of market distortion. It would be as if a stock market paid celebrities to pump a stock and then claimed the price was a pure reflection of investor sentient. The senators also asked an even more revealing question: are paid influencers allowed to bet on the same markets they are promoting? If an influencer is paid to talk up a market and can also hold a position in that market, the conflict of interest is obvious. They could promote a narrative, watch the odds move, and profit from the movement they helped create. That would make the influencer more than a mere spokesperson; they would be an insider trading on their own persuasion. That question cuts to the heart of what a prediction market is supposed to be. A market requires independent actors with diverse information. It does not work well when the house is paying people to take sides and then allowing those same people to place bets on the outcome.
This was not the first time Polymarket had been accused of blending advertising with fabrication. In June, a Wall Street Journal investigation found that Polymarket had paid creators to post videos showing fabricated bets and winnings. The videos were filmed on near-identical copies of the platform’s website, meaning the activity depicted did not actually occur on the real Polymarket site. The Journal reviewed more than 1,100 videos and found 118 that depicted roughly $900,0000 in apparent winnings. In reality, the underlying trades would have resulted in losses of about $166,000. In other words, the influencers were performing success stories, showing audiences a world where betting on political outcomes made people rich, when the very same bets would have lost money. The videos had the look of real user experiences, but they were essentially commercials, designed to lure new accountholders into the world of prediction trading. Polymarket responded at the time by saying it was “committed to maintaining accurate, fair, and transparent markets” and that it planned to audit its promotional content. Yet the senators’ letter suggests that, in their view, the problem had not been fully fixed. The fact that the Journal investigation existed made the August letters more than a reaction to an isolated social media controversy. It placed these platforms in a longer history of potential deceptive marketing. And because prediction markets are becoming more integrated into political coverage, the stakes extend far beyond one company’s reputation. News organizations regularly cite prediction market odds as if they were polling data. Pundits use them to make bold statements about who is winning. If a large number of people come to believe that odds charts are not trustworthy, then the platforms’ own value proposition—that they provide honest, real-money information—collapses. Trust is the currency of every market, and deceptive promotional content spends that currency recklessly.
In the final part of their letter, the senators urged both companies to “reevaluate all paid influencer relationships regarding elections, thorough ly vet all existing and future paid influencer arrangements, and immediately terminate any existing relationships with those who spread election misinformation, disinformation, or undermine the integrity of U.S. elections.” The language was direct, almost unusually so for congressional correspondence. It did not invite negotiation; it asked for action. The broader significance of the letters is not limited to Polymarket and Kalshi. It is about the new digital ecosystem in which political information travels. Social media algorithms reward sensational content, and prediction markets offer a convenient visual metaphor for political certainty. Marketers know this, which is why they pay influencers. But when the paid content is secretive, when the labels are easy to miss, and when the claims are false, the public cannot distinguish between organic opinion and paid persuasion. The senators are not asking for an end to prediction markets. They are asking for transparency, accountability, and a basic respect for the democratic process. With the midterms approaching, every viral post carries potential to shape the conversation. The question raised by these letters is whether an unregulated industry can be trusted to police itself—or whether regulators and the public need to pay much closer attention to who is paying whom, and why, during election season. In the end, this is not just about charts and contracts. It is about whether people can look at a piece of information and know whether it is true, who paid for it, and what agenda it serves. Those are the questions at the heart of any healthy democracy, and they are the questions that Senators Padilla and Warner have forced onto the table.