Democratic sweep at 2026 US Midterms: Democrats win majority in both the US Senate and House of Representatives (November 3, 2026, confirmed by AP or NBC News by November 5, 2026)
Pending
✦ AI-generated prediction
Published on 4. September 2026
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Predicted for 3. November 2026
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Based on: Statistical Pattern
Polymarket prices the Democratic sweep (both chambers simultaneously) at approximately 51%. Silver Bulletin separately estimates 87% probability for the House and 57% for the Senate. The joint occurrence of both events sits at 51% per prediction markets. Democrats lead the generic congressional ballot by approximately 6–7 points and are ahead in key Senate races including Texas, Ohio, and Iowa. Main risk: historical tendency to overestimate the incumbent president's party in midterm cycles. Polymarket says 51%.
Data basis for this prediction
- Polymarket Democratic Sweep 2026 Midterms: ~51 % — PolymarketAnalytics (Stand September 2026)
- Silver Bulletin: Haus D 87 %, Senat D 57 % — natesilver.net (Stand August/September 2026)
- 270toWin Senate Prognose 2026 — 270towin.com (Stand September 2026)
- Generischer Wahlumfragen-Vorsprung Demokraten: D +6–7 Punkte — RacetotheWH.com (September 2026)
Verdict: Pending
This prediction is still open. It will be evaluated automatically against real-world sources after its due date.
🏛️ 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.
🏛️ Politics
✦ AI
With 97% of votes counted, Republican incumbent Roger Wicker leads by just 28 votes per NBC News live results (04.11.2026) — one of the closest Senate races in history. Mississippi election law requires an automatic recount when the margin falls below 0.5% of total votes, expected to conclude by 15–20 November. The remaining 3% of ballots originate primarily from rural precincts with historically higher Republican turnout, giving Wicker a slight statistical edge. No specific Polymarket market for Mississippi was identified.
🏛️ Politics
✦ AI
Polymarket gives Peltola a 72% win probability (as of November 3, 2026). The Democrat benefits from Alaska's Ranked Choice Voting system, which structurally favors cross-partisan candidates, as well as strong support from the Indigenous population and Alaska Native organizations. The national environment weighs on Sullivan: Polymarket gives Democrats a 72–77% probability of winning the Senate majority and 95% in the House. Early mail-ballot returns show a slight pro-Democratic lean in Alaska. Because Alaska uses ranked choice, a final count is not expected until November 5.