Illinois Senate Election Winner: Don Tracy (R)

Politics · closes Jan 14, 7:00 PM ET

Kalshi vs Polymarket US on the same question. Polymarket US prices YES at 2.5¢, Kalshi at 2.2¢ — a 0.3¢ gap. Prices are each venue’s own; confirm at the venue before acting.

Prices by venue

VenueYESOddsBidAskVolumeConfirmed
Kalshi2.2¢+44451.8¢2.6¢$20kNov 1, 7:01 AM ET
Polymarket US2.5¢+39002¢3¢$625Nov 1, 7:15 AM ET

0.3¢cross-venue gap on YES. Two quotes differ only when each venue’s book rules out the other’s price; a one-sided or wide book reads as a bound, not a price.

Price history

0¢25¢50¢75¢100¢Aug 3Sep 2Oct 2Nov 1Polymarket US 2.5¢Kalshi 2.2¢
KalshiPolymarket US

Last 90 days, daily closes beyond the raw week. Kalshi solid, Polymarket dashed. A break in a line is a gap in the record, not a move.

How it settles

This market will settle to Yes if the Republican Party nominee wins the 2026 midterm election for US Senator from Illinois. Outcome sourced from relevant government authorities. The determination of the winner includes any runoff, tiebreak, or other relevant procedure under the applicable rules of the relevant jurisdiction. This market and these products have not been endorsed by Decision Desk HQ. Any references to Decision Desk HQ or any associated marks are descriptive only and do not indicate an endorsement of this product or any affiliation between Decision Desk HQ and Polymarket US.

Each venue settles on its own rules; the text above is the primary venue’s. A gap can be a rules difference, not a mispricing.

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Live card for this market — both venues streaming, the order book, the arbitrage calculator and related news.

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