[Kalshi and Polymarket Prediction Market Traders Go "Street-Sweeping" to Survey US Voters, Competing for Information Advantage in Midterm Elections] According to Bloomberg, as the US midterm elections approach, a group of senior traders on the Kalshi and Polymarket platforms have begun to seek trading advantages through in-person visits and voter data analysis. Among them, Douglas Campbell, a former economics professor and election model analyst at the Democratic National Committee (DNC), has accumulated profits of over $800,000 on Kalshi under the username AlexanderHam, making him the sixth most profitable election trader on the platform. Another trader, David Bensoussan, is mainly active on Polymarket, accumulating profits of over $1.5 million under the username Scottilicious. His position of over $280,000 betting on the Democrats winning the House of Representatives has now risen to approximately 94% market probability.