NEW YORK — When polls close in the U.S. midterm elections on Tuesday night, Noah Poser will be glued to his phone tracking dozens of large wagers he placed on prediction markets. Poser, 28, who works in financial technology and has written about betting strategies in such markets, plans to track every change in the vote count from a friend's watch party in New York City. He said he has wagers with a total value in the six figures on the line, betting on a strong showing by Democrats, and entered the bets a few months ago when odds were at a much better price. If he wins, he estimates profits of as much as $30,000. "It's a numbers game; you have to strip your emotions out of it," said Poser, the author of a self-published book about his betting strategies, including prediction markets. Poser built a proprietary quantitative model for trading these markets. He will not be alone on Tuesday evening. Across the United States, people are betting on this year's midterm races at record levels for U.S. election betting. Prediction markets rose to prominence in 2024 when they bucked traditional o