🏛️ Politics · Next Year

US Midterms 2026 (3 November 2026): Democratic Party wins majority in the US House of Representatives with at least 218 of 435 seats (confirmed by AP or NBC News by 7 November 2026)

Hit ✦ AI-generated prediction Published on 17. September 2026 · Predicted for 3. November 2026 · Based on: Speculative

Probability

76%

Polymarket (as of 17 September 2026) prices a full Democratic Sweep (both chambers) at 60% and the 'Republican Senate / Democratic House' scenario at 31%, implying a total probability of ~91% for a Democratic House win. Nate Silver's Silver Bulletin model shows Democrats with a generic ballot advantage of D+7 to D+12 and Trump approval at ~38%; historically the president's party loses the House at such readings (2006: D+31 seats, 2018: D+41 seats). This prediction focuses exclusively on the House and is consistent with the open Cassandra forecast 'Democrats win Senate majority ≥51 seats'. Calibrated value 76% — conservatively below Polymarket's implied ~91% to account for polling errors and potential late swings.

Data basis for this prediction

Polymarket US Midterms 2026: Dem Sweep 60 %, R Senate/D House 31 %, R Sweep 11 % (17.09.2026)
Nate Silver / Silver Bulletin: Demokraten favorisiert für beide Kammern, Generic Ballot D+7–12 (17.09.2026)
Trump-Zustimmungsrate ~38 % (Newsweek, 17.09.2026)
Historische Midterm-Muster: Approval < 40 % → Repräsentantenhaus-Verlust der Regierungspartei (FiveThirtyEight-Archiv)

Verdict: Hit

Die Demokraten gewannen bei den Midterms am 3. November 2026 klar die Mehrheit im Repräsentantenhaus. NBC News projizierte 258 Sitze für die Demokraten (deutlich über dem Schwellenwert von 218), CBS News schätzte 256 Sitze, CNN meldete über 250 Sitze. Die Bestätigung erfolgte durch NBC News und andere große Nachrichtenagenturen bis zum 4./5. November 2026 – also innerhalb der Frist. Quellen: NBC News (https://www.nbcnews.com/politics/2026-elections/house-results), Al Jazeera (https://www.aljazeera.com/news/2026/11/4/democratic-party-gains-us-house-majority-in-2026-midterm-elections), CNN (https://www.cnn.com/2026/11/05/politics/live-news/midterm-election-congress).

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