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Dem House control 2026
Will Democrats win the US House in 2026?
premise not yet verified
EHIQ
65%
(60-70%)
Edge
-28.5pp
EHIQ below market
The call vs the market, dated
Opened April 19, 2026. The at-open probability stamps on this call have not passed provenance verification and are excluded from all statistics; the resolved outcome is unaffected.
EHIQ vs market over time · 45 data points · refreshed daily
EHIQMarket
Thesis
⛔ EHIQ SAYS NO: Dems not as likely to take the House as the market thinks (−27.5pp)
Polymarket prices Dem House control at 92.5% (volume $5.7M, as of 2026-09-26). EHIQ at 65% — 27.5pp below market. The midterm-incumbent-loss dynamic favors Dems, and Republicans hold a thin majority, so the structural advantage is real. But 92.5% prices near-certainty: low single-digit-seat majorities are historically resilient when the in-party gerrymandering holds (post-2020 cycle redistricting helped both sides). EHIQ tightens to 65% reflecting executable risk on D candidate quality + R structural redistricting wins in TX/FL/NC.
- 1.Polymarket prices Democratic House control at 77.5% / Republican at 21.5% (volume $5.7M — deep market, real consensus). EHIQ at 65% — 12pp below market.
- 2.Structural advantages for Democrats: midterm-incumbent-loss dynamic (out-party historically gains ~25 House seats); Republicans hold a thin majority (small swings flip control); presidential approval typically drags the in-party.
- 3.Counter-structural: Republican post-2020-cycle redistricting wins in TX, FL, NC, GA, NV held — gerrymandering produces low-single-digit-seat majorities that are historically resilient to wave conditions.
- 4.Net seat math: Republicans need ~5-10 net seat losses to flip control to Democrats; the question is whether the in-party loss dynamic exceeds the gerrymandering durability.
- 5.Democrat candidate quality in swing districts not yet demonstrated as of mid-2026 — recruitment and Q2/Q3 fundraising data are the next calibration milestones.
- 6.Polymarket's 77.5% framing pricing this as near-lock overstates the certainty — recent low-single-digit majorities (2018, 2020, 2022 control flips) all had narrow popular-vote margins, suggesting variance is higher than market implies.
- 7.12pp fade reflects: high probability of Democratic control still + meaningful tail risk of Republican hold due to gerrymandering durability and uneven D candidate quality. Range 60-70%.
- 8.Resolution: November 3, 2026 election. Recalibration: Cook Political Report ratings + DCCC vs NRCC fundraising + 4-5 marquee swing-district candidate quality assessments.
Opened
April 19, 2026
Expected resolution
November 4, 2026
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