Senator Elizabeth Warren is poised to implement a crackdown on prediction markets once she assumes the gavel of the Senate Banking Committee in January. A banking aide informed Punchbowl News that Warren aims to address the sector’s perceived “Wild West-style lack of oversight.”
Following the recent Democratic victories in both chambers of Congress, the Massachusetts Democrat is prepared to lead the committee, which oversees banking, housing, the Federal Reserve, and cryptocurrency. The aide’s summary of her agenda was released by Punchbowl on Monday.
Warren intends to leverage the committee’s investigative capabilities for scrutiny of prediction markets and election betting platforms, focusing on issues such as insider trading and platform manipulation, a concern she previously raised before the midterm elections.
Her earlier initiative enjoyed bipartisan support. On October 28, Warren and Senator John Curtis of Utah sent inquiries to Kalshi CEO Tarek Mansour and Polymarket CEO Shayne Coplan, questioning how these companies ensure that candidates, campaign staff, and others possessing material nonpublic information are prevented from trading election-related contracts.
Concerns Raised by Warren and Curtis to Kalshi and Polymarket
“We are particularly troubled by election-related event contracts,” the senators expressed. “Event contracts tied to elections receive prominent coverage and are treated by some observers as indicators of political momentum. There are also documented instances of candidates betting on their own races, thereby undermining the overall integrity of the American electoral process.”
The correspondence referenced specific instances where candidates traded in their own contests on Kalshi, including a February 2026 California gubernatorial race, while also pointing to research alleging wash trading and volume manipulation on Polymarket. Additionally, it cited an NPR investigation highlighting campaign insiders who traded before polling results were released.
“The identification of isolated instances of improper trading does not demonstrate that these markets are adequately protected,” Warren and Curtis noted. “Instead, it raises serious questions about how much similar activity may be going undetected.” They requested written responses by Election Day, November 3.
Robert DeNault, Kalshi’s head of enforcement, informed Business Insider that the company “proactively blocks candidates and campaign staff from trading to protect market integrity.” Polymarket did not respond to requests for comment.
Cryptocurrency Within the Banking Committee’s Focus
Prediction markets represent a significant area of interest for cryptocurrency stakeholders. Polymarket operates as a crypto-native platform that has secured U.S. access through a CFTC-registered exchange following a period offshore, while Kalshi functions as a designated contract market under the Commodity Futures Trading Commission. Both platforms fall under the jurisdiction of the committee Warren is about to chair.
Under the leadership of Chairman Michael S. Selig, the CFTC has been engaged in defending these platforms against various state gambling laws, pursuing legal actions against states like Wisconsin and New York to assert exclusive federal jurisdiction over event contracts on registered exchanges. A Democratic Banking chair targeting what her aide described as a Wild West environment stands in contrast to this approach.
Warren has emerged as one of the most vocal critics of the cryptocurrency industry on Capitol Hill. She previously opposed the CLARITY Act, a market structure bill that failed to advance in a Senate cloture vote on September 15. Analysts suggest that a Democratic Congress leaves little opportunity for a Republican reworking of the legislation, while House Democrats are already formulating their own proposals that would expand the SEC’s role.
The broader agenda outlined by the aide for Warren also encompasses legislation addressing affordability, a push to cap credit card interest rates, controls on AI chip exports, and oversight of officials from the Trump administration, Wall Street executives, Big Tech leaders, and individuals associated with the Trump family’s cryptocurrency ventures.
The challenge for prediction markets is no longer whether regulators from the Trump era will facilitate progress. The critical question now is whether Warren, endowed with subpoena power and the Banking gavel, will transform her correspondence with Kalshi and Polymarket into hearings that may redefine the regulation of election and event contracts.
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