Ed Markey
Alexander Rikleen
Ayanna Pressley
Seth MoultonMassachusetts Democratic Senate Primary Winner
Updated 1 month ago
Winner: Ed Markeyon Sep 2, 2026
WinnerWhat happened
Resolved 2026-09-01
Ed Markey won the Massachusetts Democratic Senate primary on September 1, confirming what markets had priced at 99% the day before. The 80-year-old incumbent defeated Representative Seth Moulton, who had made Markey's age a central campaign issue, with strong support among women and progressive voters that had coalesced behind the longtime senator.
Before Massachusetts Democratic Senate Primary Winner ended, the final Polymarket odds were: Ed Markey: 100%. These probabilities were derived from real-money trading right up until the market closed.
No — this market has ended on Polymarket. PredictMarketCap tracks thousands of active markets across Polymarket, Kalshi, Limitless & Predict.fun if you're looking for what's live now.
Prediction market odds reflect the aggregate opinion of traders who risk real money on outcomes. The price of a share (e.g., 65¢) represents the market's implied probability (65%). Prices move as traders buy and sell based on new information, polls, and analysis.
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