November 4 volume closes at $5.33B across 10 exchanges on VolumeRace's exchange-reported tally, with $133.35B traded over the last 30 days

Scott Colom’s prediction-market prices surged over roughly a day even as Mississippi’s Senate race remained uncalled. The move put both Polymarket and Kalshi contracts close to their maximum payout levels.

Market confidence runs ahead of a call

As of Nov 5, 2026, at 3:24 PM ET, Colom’s contract on Polymarket stood at 97c, up 13 points. On Kalshi, it reached 96.4c after a 12.2-point increase.

Colom held a 1,138-vote lead according to the Associated Press count. That advantage provided the vote-count backdrop to the repricing, but the race had not been called.

The two platforms therefore showed strong—and closely aligned—confidence in a Colom victory, rather than confirmation of the result. The supplied information does not establish how many votes remained outstanding or where they were located.

What it means for prediction markets

• Prices are not results: The 97c Polymarket price and 96.4c Kalshi price reflected market expectations while the Mississippi Senate outcome remained unresolved.
• The count remains consequential: Without details on outstanding ballots, the 1,138-vote lead alone is insufficient to assess how secure Colom’s position was.
• Both venues repriced sharply: Gains of 13 points and 12.2 points showed a similar shift in expectations across the two markets over roughly a day.