Prediction Markets News: Today’s Latest Updates

Michigan Senate prediction markets

Latest News

Michigan Senate Markets Give El-Sayed Significant Edge as Polling Shows a Dead Heat

More than $5.7 million has traded across Kalshi and Polymarket on Michigan’s open Senate race, with both platforms putting Abdul El-Sayed in the low- to mid-60s. But a new Detroit-area poll gives Republican Mike Rogers a narrow lead, underscoring how far prediction-market confidence has moved ahead of the conventional view in a race central to Senate control.

Regulation and Policy

New Jersey Asks Supreme Court to Decide Whether Prediction Markets Are Sportsbooks or Swaps

New Jersey has asked the U.S. Supreme Court to review its loss to Kalshi, giving the justices a direct chance to resolve the growing split over whether sports-event contracts are federally regulated derivatives or state-regulated gambling.

The petition comes days after the Ninth Circuit ruled for Nevada and against Kalshi, the opposite conclusion reached by the Third Circuit in New Jersey.

Promo News

NFL Again Demands Prediction Markets Pull ‘Objectionable’ Bets Ahead of Kickoff

The league says contracts on player injuries, officiating, broadcast mentions and easily manipulated plays remain available months after its first warning. Its latest letter, sent days before the 2026 season begins, sharpens the pressure on Kalshi, Polymarket and other federally regulated exchanges, and notably calls their products “bets.”

Promo News

NFL Week 1 Predictions: Daily Updates and Odds

Trading in the Patriots vs. Seahawks accelerated ahead of Wednesday night’s opener, lifting Kalshi game composite volume to $2,993,670, up $1,634,959 overnight, as of 6:04 a.m. ET on Sept. 9. The Chargers remained Week 1’s strongest favorite at 82% against the Cardinals.