US Midterm elections (November 3, 2026): Democrats win a majority in the US Senate (net gain of at least four seats from Republicans, confirmed by AP or NBC by November 4, 2026)
Hit
✦ AI-generated prediction
Published on 9. September 2026
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Predicted for 3. November 2026
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Based on: Historical Cycle
Polymarket shows a 'Democratic Sweep' (Democrats control both chambers) at 52% probability (as of September 9, 2026, $11M trading volume). Since a Democratic Senate gain only occurs in the sweep scenario per Polymarket's model, this implies Senate majority probability of ~52%. Silver Bulletin (Nate Silver) sees the Senate at 50:50. Democrats need a net gain of four Republican-held seats; Republicans defend 22 of 35 seats on the ballot, including Alaska, Maine, Ohio, and Texas, where recent polls show Democrats in reach. President Trump's ~38% approval and economic conditions favor an elevated midterm counter-vote.
Data basis for this prediction
- Polymarket Balance of Power 2026: Democratic Sweep 52 %, R Senate D House 35 %, R Sweep 12 % (Stand: 9. September 2026, $11 Mio. Handelsvolumen)
- Silver Bulletin (Nate Silver): US-Senat-Rennen 50:50 (September 2026)
- Cook Political Report / 270toWin: 22 republikanische Senatssitze zur Wahl stehend; D müssen netto +4 gewinnen (September 2026)
Verdict: Hit
Die Vorhersage ist eingetreten. Laut NBC News, CBS News und CNBC gewannen die Demokraten bei den Midterms am 3./4. November 2026 die Mehrheit im US-Senat und erreichten mindestens 54 Sitze. Sie flippten mindestens 6–7 republikanische Sitze: Maine, Iowa, Ohio, North Carolina, Texas (James Talarico gewann gegen Ken Paxton trotz massiver Elon-Musk-Unterstützung), South Carolina und weitere. Das übertrifft den vorhergesagten Netto-Gewinn von mindestens vier Sitzen deutlich. NBC News bestätigte die demokratische Senatsmehrheit (Quelle: nbcnews.com/politics/2026-elections/senate-results). Die Vorhersage mit 52 % war damit konservativ – der tatsächliche Schwung war stärker als erwartet.
🏛️ Politics
✦ AI
Democrats won both chambers historically at the November 3, 2026 midterms (Senate 54:44, House 258 seats — largest majority since 1993). Trump's disapproval rating stands at 62% (FiveThirtyEight, Nov 2026). Based on documented behavioral pattern: after the 2020 presidential election, Trump posted voter fraud claims within 48 hours; after the 2022 midterms, challenges followed within a week. Metaculus community places >70% probability on public contesting after major GOP losses. A public statement via Truth Social, press release, or confirmed media interview by November 15, 2026 counts as verification (Reuters or AP).
🏛️ Politics
✦ AI
Ukrainian, US, and Russian negotiators convene November 10–11 in Abu Dhabi. Russia conducted large-scale long-range strikes on Ukrainian energy infrastructure and logistics hubs on November 3–4; Ukraine responded with drone strikes on the Ryazan refinery. Positions on territory and security guarantees remain far apart. No Polymarket or Kalshi market covers this specific event; historical base rate for failure of comparable trilateral talks: >80%.
🏛️ Politics
✦ AI
Spain holds a general election on 29 November 2026. Polymarket prices Feijóo as next PM at 85%, Kalshi at 82% — both serve as anchors. A separate Polymarket market gives PP+Vox a 92% probability of a joint majority (>176/350 seats). Current polls (Sondaxe) show PP at 29.2% narrowly ahead of PSOE (26.9%); Vox is tracking slightly higher. Feijóo failed to form a government in 2023, but market odds reflect the lesson learned: PP+Vox is now seen as stable enough. No deviation from market anchor warranted.