Prediction market platform Kalshi reported that trading volume on its 2026 US midterm election markets surpassed $2.5 billion, nearly double the $1.3 billion recorded during the 2024 election cycle. The surge highlights growing adoption of prediction markets as a tool for gauging political outcomes. As of November 4, Kalshi data showed that the market favorite won 479 races, achieving an accuracy rate of approximately 98%. These contests spanned House, Senate, and gubernatorial elections, along with state-level races for attorney general, lieutenant governor, and secretary of state positions.