Democrats Target Prediction Markets Kalshi and Polymarket After Midterm Success

In the wake of the 2026 U.S. midterm elections, prediction markets Kalshi and Polymarket are facing increased scrutiny from Democratic lawmakers. Kalshi reported that its market predictions were remarkably accurate, forecasting a Democratic majority in both the House and Senate, which ultimately came to fruition.

Democrats, including prominent figures like Senator Jeff Merkley and Representative Maxine Waters, are preparing legislative actions to address concerns surrounding these platforms. They have criticized the implications of allowing betting on sensitive topics such as elections, war, and terrorism.

Kalshi's data indicated that it correctly predicted 479 out of 487 race outcomes, contributing to over $3 billion in trading volume, with Kalshi alone accounting for more than $2.5 billion. This accuracy has raised alarms among lawmakers regarding potential insider trading and market manipulation, as well as the ethical implications of wagering on political events.

As the new Congress convenes with Democrats in control, there are expectations for rigorous investigations and potential new regulations targeting prediction markets. The bipartisan concerns expressed by both Senator Elizabeth Warren and Senator John Curtis further highlight the seriousness of the scrutiny these platforms are under.

Looking ahead, stakeholders will be watching for potential legislation from Merkley or Waters, congressional hearings on the subject, and how Kalshi and Polymarket respond to the ongoing questions about insider trading.