About This Market
Traders give Jake Auchincloss (D) about a 97.1% chance. Tom Stalcup (R) follows at 2.1%. Compare prices from Kalshi, Polymarket US, and Polymarket. The largest cross-platform price difference is 0.9 percentage points.
Traders give Jake Auchincloss (D) about a 97.1% chance. Tom Stalcup (R) follows at 2.1%. Compare prices from Kalshi, Polymarket US, and Polymarket. The largest cross-platform price difference is 0.9 percentage points.
Prediction markets on Polymarket and Kalshi are tracking the winner of the MA-04 House election. This market resolves based on the official election results announced on November 3, 2026, with odds fluctuating based on candidate campaigning and voter sentiment leading up to the election.



