Bettors are heavily engaged in the US presidential election, with trading volumes approaching $4 billion across various prediction markets on Nov. 5. Polymarket has become the leading platform, showing over $3.3 billion in trades for the presidential race, despite operating outside US regulations. New entrants like Kalshi, Robinhood, and Interactive Brokers have also gained momentum, collectively bringing in over $500 million in betting activity. As of Nov. 5, polls indicate Donald Trump's winning odds at approximately 62% on Polymarket and around 58% on Kalshi and Interactive Brokers. Election contracts cover multiple aspects, including the popular vote and candidate victory margins, accounting for nearly $1 billion in activity. Following a court win, Kalshi's entry into the US market has intensified competition. Additionally, concerns have been raised regarding potential manipulation on Polymarket, where allegations of wash trading—a tactic to artificially inflate volume—have emerged. However, industry experts argue that these markets reflect public sentiment more than threatening election integrity.

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