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Bipartisan pair of Senators press Kalshi, Polymarket over election markets

A bipartisan pair of senators are pressing Kalshi and Polymarket over prediction markets tied to the November 2026 midterm elections.  “We write to express concerns about election-related prediction markets and to request specific information about your companies' efforts to prevent insider trading, market manipulation, and wagers based on material nonpublic information,” Sens. Elizabeth Warren (D-Mass.)...