Will the Republican Party win the OR-05 House seat?

Prediction markets currently give a 17% probability that Will the Republican Party win the OR-05 House seat?. This contract trades at 17¢ on Polymarket, closing November 4, 2026. The Republican contract on OR-05 has collapsed from 20¢ to 16¢ over seven days, suggesting significant deterioration in GOP prospects for this traditionally Democratic district.

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17¢
Bid/Ask 10/23¢·Spread 13¢·Vol $0·OI $1,074.339·Closes Nov 4, 2026·196d remaining
0x07db4ca35f28bc5ca53a161794ab7b6aad0f3f4b32786fd2c3ca3070cbd31d23
7-day price709 snapshots · 2 regime
22¢17¢ current
Apr 813¢Apr 21

Analysis

4d ago

The Republican contract on OR-05 has collapsed from 20¢ to 16¢ over seven days, suggesting significant deterioration in GOP prospects for this traditionally Democratic district. The extreme 954% implied yield on the Yes side combined with near-zero 24-hour volume and $8.7k open interest indicates this is a thin, illiquid market where the low price may reflect limited trading activity rather than confident Democratic consensus. With 201 days to expiration and a 1561% realized volatility, this market remains highly unstable and vulnerable to sharp repricing as the 2026 cycle develops.

Resolution rules

This market will resolve according to the party of the candidate who wins the OR-05 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) 847.7%
IY (No) 40.8%
Adj IY 424%
CRI 5
▶ Full indicator table (4)
IndicatorValue
IY (Yes)847.7%
IY (No)40.8%
Adj IY424%
CRI5

Regime

Label
neutral
Score
0.5
Spread
13¢
Computed
4/21/2026, 8:26:27 PM
Indicators computed 4/21/2026, 8:23:18 PM

Trade

View on polymarketsf trade 0x07db4ca35f28bc5ca53a161794ab7b6aad0f3f4b32786fd2c3ca3070cbd31d23 yes 100

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