By Marshall Cohen, CNN (CNN) — Prediction markets about the 2026 midterm elections have surpassed $1.4 billion in trading volume as Election Day fast approaches, according to a new CNN analysis. This year has seen massive growth in the prediction industry, where people can bet on real-world events like sports, entertainment and the weather. While
The predictive markets linked to the 2026 legislative elections already exceed $1.4 billion in negotiated volume, with Kalshi and Polymarket leading. Growth also revives questions about the meaning of those figures, the use of insider information, and the role of gambling in political conversation.