The betting odds for Donald Trump winning the upcoming election have surged, reaching their highest level since Joe Biden stepped aside for Kamala Harris in July. Polymarket, a popular election betting platform, now gives Trump a 66% chance of winning, while other platforms like Kalshi and PredictIt show slightly lower odds. Polymarket is investigating the source of large bets on Trump amid scrutiny over eight-figure wagers. This trend marks a shift in betting markets, which recently favored Harris.