Will the Republican Party win the IL-04 House seat?

Prediction markets currently give a 3% probability that Will the Republican Party win the IL-04 House seat?. This contract trades at 3¢ on Polymarket, closing November 3, 2026. IL-04 is pricing Republicans at just 4¢, reflecting the district's strong Democratic lean, but the 4,381% implied yield on a Yes resolution signals extreme mispricing or tail-risk positioning rather than genuine Republican viability.

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3¢
Bid/Ask 3/3¢·Spread 0¢·Vol $0·OI $21,335.103·Closes Nov 3, 2026·195d remaining
0x6c3d8a7061464f171273b138d0e6d87395843150ca2ad9e57b2121e051052458
7-day price59 snapshots · 2 regime
6¢3¢ current
Apr 83¢Apr 18

Analysis

5d ago

IL-04 is pricing Republicans at just 4¢, reflecting the district's strong Democratic lean, but the 4,381% implied yield on a Yes resolution signals extreme mispricing or tail-risk positioning rather than genuine Republican viability. The market shows concerning illiquidity with only $165.77 in 24-hour volume against $19.4M open interest, and the price has collapsed from 6¢ to 4¢ over seven days, suggesting either informed selling or a liquidity event rather than fundamental news. With 200 days to expiry and a Cliff Risk Index of 24, this appears to be a speculative dumping ground where small YES positions are being held as lottery tickets rather than a market reflecting realistic 2026 outcomes.

Resolution rules

This market will resolve according to the party of the candidate who wins the IL-04 congressional district seat in the U.S. House of Representatives in the 2026 midterm elections. The midterm elections will take place on November 4, 2026. ​A candidate's party will be determined by their ballot-listed or otherwise identifiable affiliation with that party at the time all of the 2026 House elections are conclusively called by this market's resolution sources. A candidate without a ballot-listed affiliation to either the Democrat or Republican parties will be considered a member of one of these parties based on the party with which they most recently expressed their intent to caucus at the time all of the House elections are conclusively called by this market's resolution sources. This market will resolve based on the result of the election as indicated by a consensus of credible reporting. If there is ambiguity, this market will resolve based solely on the official results as reported by the United States government, specifically the Federal Election Commission (https://www.fec.gov/).

Indicators

IY (Yes) 6053.3%
IY (No) 5.8%
Adj IY 3027%
CRI 32
▶ Full indicator table (4)
IndicatorValue
IY (Yes)6053.3%
IY (No)5.8%
Adj IY3027%
CRI32

Regime

Label
neutral
Score
0.5
Spread
0¢
Computed
4/22/2026, 12:57:57 AM
Indicators computed 4/22/2026, 12:53:18 AM

Trade

View on polymarketsf trade 0x6c3d8a7061464f171273b138d0e6d87395843150ca2ad9e57b2121e051052458 yes 100

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