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| 0 | 0% | 0¢ | 0¢ | — | $0 | Trade → |
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This market asks how many incumbent House Democrats will lose their party’s nomination in 2026 primary elections. It matters because primary defeats can shift the party’s ideological balance and affect general election competitiveness and leadership dynamics.
Primary vulnerability for incumbents depends on factors such as redistricting, ideological splits within the Democratic coalition, and local political dynamics in each district. Historically, most incumbents win renomination, but certain cycles—with strong activist movements, insurgent fund-raising, or major policy controversies—produce higher rates of primary turnover. The 2026 environment, candidate quality, and whether there are notable retirements or open-seat contests will shape the final count.
Market prices reflect collective expectations about how many incumbents will be defeated in primaries; they update as new information arrives (challenger announcements, polling, endorsements, and legal or redistricting developments). Use the market as a real-time indicator of shifting expectations rather than a fixed prediction.
Settlement will occur after the 2026 primary election cycle has produced final, certified results and any applicable runoffs are decided; the relevant window covers the official 2026 party primary contests for House seats where incumbents seek renomination.
An incumbent is counted as having lost their primary if they fail to win their party’s nomination in the official 2026 primary process, including defeat in a primary election or any party-sanctioned runoff required by state rules.
The event pertains to incumbent members of the U.S. House who were elected as Democrats and who stood for renomination in the regular 2026 primary cycle; special-election scenarios or vacancies filled outside the 2026 primaries are generally excluded unless specified by the market rules.
The eight outcomes partition the possible numbers of incumbent Democratic primary defeats into mutually exclusive ranges or buckets, allowing traders to express expectations about how many incumbents will be unseated during the 2026 primaries.
Major shifts will come from credible challenger announcements, polling showing competitive primaries, endorsement swings (party committees or influential groups), redistricting rulings or filings, reports of misconduct or scandal, and the results of early-state or high-profile primary contests that set momentum.