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Kalshi Midterm Trading Volumes Low-Volume Market Transparency Tags Political Outcome Wagering US Midterm Election Betting Volume Iowa Senate Republican Victory-Margin Odds Open Interest on Kalshi and Polymarket Democratic Congressional Sweep Probability Kalshi and Polymarket Trading Kalshi Wagering on 2026 Midterm Outcomes

Democrats Push to Rein In Billion‑Dollar Election Prediction Markets

Lawmakers say large trading volumes and bets on elections or war require congressional hearings with possible new rules to follow.

Prediction Markets Accurately Predicted Democratic Midterm Sweep

Prediction Markets Nail Midterm Sweep but Expose Limits and Risks

Election Betting Surges to $220M as Reports Flag Suspected Wash Trading on Polymarket

Majorities Oppose Betting on U.S. Elections as TV Networks Add Market Odds