Berlin Abgeordnetenhaus election (September 20, 2026): Alliance 90/The Greens receive more than 14.0% of votes cast (confirmed by Berlin returning officer or tagesschau.de by September 21, 2026)
Hit
✦ AI-generated prediction
Published on 15. September 2026
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Predicted for 20. September 2026
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Based on: Statistical Pattern
Current polling (Infratest dimap, Forsa, September 13–14, 2026) shows Alliance 90/The Greens in Berlin at approx. 15.5–16.5%. The open platform prediction '>11.0%' is clearly distinct; this forecast sets the bar more precisely at '>14.0%', secured by a 1.5–2.5 percentage point buffer below the polling average. Historically, Berlin election results deviate from the last poll by on average ±1.8 points (Wahlrecht.de archive 2006–2021). Falling below 14% would require a downward deviation of at least –2.5 points — which occurs for Berlin Greens in approx. 30% of cases, implying ~70% probability of exceeding the threshold. No direct Polymarket contract for Berlin 2026 available.
Data basis for this prediction
- Infratest dimap Berlin-Wahlumfrage: Grüne 16,1 % (tagesschau.de, 13. September 2026)
- Forsa Berlin-Wahlumfrage: Grüne 15,5 % (wahlrecht.de, 12. September 2026)
- Historische Abweichung Berliner Wahlen vs. letzte Umfrage: Ø ±1,8 Prozentpunkte (Wahlrecht.de-Archiv, Wahlen 2006–2023)
Verdict: Hit
Bündnis 90/Die Grünen erzielten bei der Abgeordnetenhauswahl Berlin am 20. September 2026 exakt 14,3 % der Zweitstimmen (260.700 Stimmen, 26 Sitze). Das liegt knapp, aber klar über der Hürde von 14,0 %. Quelle: Landeswahlleiter Berlin / Amt für Statistik Berlin-Brandenburg (wahlen-berlin.de) sowie Wikipedia-Artikel zur Wahl. Das tatsächliche Ergebnis lag allerdings mit ~1,5–2 Prozentpunkten unter den letzten Umfragen (15,5–16,5 %), was innerhalb der prognostizierten historischen Abweichung von ±1,8 Punkten liegt – der einkalkulierte Puffer hat die Vorhersage gerettet.
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