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Prediction markets face their biggest forecasting test as midterm wagering passes 1.48 billion dollars

  • Prediction markets face their biggest forecasting test as midterm wagering passes 1.48 billion dollars — More than 1.48 billion dollars has been wagered on Tuesday's US midterm elections across prediction markets, with Kalshi reporting 1.33 billion dollars in midterm trading volume on Monday and about 145 million dollars wagered on Polymarket's congressional markets. More than 28,000 midterm markets have opened, and a 2025 Vanderbilt University study of nearly 2,500 markets on the 2024 election found prediction markets are generally well calibrated at scale. (Reuters)

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