🏛️ Politics · Next Month

Berlin state election (September 20, 2026): CDU becomes the largest party in the Berlin House of Representatives

Miss ✦ AI-generated prediction Published on 3. September 2026 · Predicted for 20. September 2026 · Based on: Historical Cycle

Probability

40%

CDU under lead candidate Stefan Evers polls at 19–20% (INSA: 20%, Civey: 19%), narrowly ahead of Die Linke (19–21%) and AfD (17–18%). The race is extremely tight—all three parties within 3 percentage points. CDU benefits from strong turnout mobilization and Evers' visibility as former parliamentary leader. In a three-way horse race, CDU becoming largest party represents a ~40–45% scenario. Coalition formation (CDU+Greens+SPD or Linke+Greens+SPD) depends more on the bloc balance than CDU margin. No Polymarket market available.

Data basis for this prediction

INSA Berlin Umfrage: CDU 20 %, Linke 19 %, AfD 17 % (T-Online, 13. August 2026)
Civey Berlin Umfrage: Linke 21 %, CDU 19 %, AfD 18 % (T-Online, 5. August 2026)
Koalitionsrechner Berlin 2026: realistische Optionen CDU/Grüne/SPD oder Linke/Grüne/SPD (koalitions-rechner.de)
dawum.de Berlin-Wahltrend (Stand 3. September 2026)

Verdict: Miss

Die CDU wurde NICHT stärkste Partei. Die Linke gewann die Wahl zum Abgeordnetenhaus am 20. September 2026 mit 25,7 % der Zweitstimmen (mehr als verdoppelt gegenüber 12,2 % in 2023) und wurde erstmals stärkste Kraft in Berlin. Die CDU kollabierte auf 18,8 % (Platz 2), die AfD kam auf 16,3 %, die Grünen auf 14,3 %, die SPD auf 12,1 %. Der CDU-Einbruch wurde als 'Desaster' von Kanzler Merz bewertet. Quellen: bpb.de ('Wahl zum Abgeordnetenhaus Berlin 2026: Die Linke wird erstmals stärkste Kraft'), Brussels Signal ('Die Linke wins Berlin election as CDU vote collapses'), Al Jazeera (20.09.2026).

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