BLOOMBERG · 2026-11-01 12:13 UTC

Traders on Kalshi and Polymarket Went to Maine Hunting a Midterm Election Edge

Prediction market traders on Kalshi and Polymarket conducted field research in Maine and other locations to gain an edge on election betting, with top traders like Douglas Campbell and David Bensoussan making hundreds of thousands to over $1.5 million in profits. While prediction markets attract many losing retail traders, a smaller group of 'sharps' exploit this by taking the other side of trades, though platforms like Polymarket have faced insider trading concerns and launched investigations.

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