Will Ed Markey be the Democratic nominee for the Senate in Massachusetts?
PoliticsResolves September 1, 202657 days to closeCross-platform
Kalshi prices this contract at 76¢, while Polymarket has it at 82¢. That's a 5.0¢ spread between the two prediction markets. Resolves September 1, 2026 (~57 days).
The two prediction markets disagree by 5.0¢ on this contract — that's a meaningful divergence worth investigating.
StreetSpread aggregates real-time odds across Kalshi, Polymarket, DraftKings,
FanDuel, BetMGM, Caesars, and Fanatics. Prices update every ~30 seconds via
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