Berlin State Election (September 20, 2026): BSW wins less than 5.0% and fails to enter the state parliament
Pending
✦ AI-generated prediction
Published on 9. September 2026
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Predicted for 20. September 2026
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Based on: Historical Cycle
Bündnis Sahra Wagenknecht (BSW) polls at 3.6% in Berlin (politpro.eu, early September 2026) – 1.4 points below the 5% threshold. Even accounting for ±2% polling error, entry remains unlikely. None of the existing open Berlin election predictions covers BSW. Confirmed by Landeswahlleiter Berlin or tagesschau.de by September 21, 2026.
Data basis for this prediction
- politpro.eu: Berlin election polls September 2026 – BSW 3,6 %
- Wikipedia: 2026 Berlin state election – polling aggregates
- Landeswahlleiter Berlin: 5-%-Sperrklausel §2 Abs. 2 LWahlG Berlin
Verdict: Pending
This prediction is still open. It will be evaluated automatically against real-world sources after its due date.
🏛️ Politics
✦ AI
The SPD received exactly 18.4% in the 2023 Berlin state election and has since been in opposition. Current polls (August/September 2026) put the SPD at 19–22%, making a result above 18.0% likely. Headwinds: ongoing federal political controversy and competition from BSW (which, per existing prediction, is expected below 5%). The 18.0% threshold is just below the 2023 result and would only be missed in a dramatic collapse. No Polymarket market; Metaculus aggregate implies ~65% for SPD above 18%.
🏛️ Politics
✦ AI
Both current Berlin polls place the FDP far below the 5% threshold: INSA (Sept 2–4, 2026): 3.0%; Infratest dimap (Aug 27–31, 2026): FDP below the statistical detectable threshold. The Berlin FDP has not reached the 5% mark in any poll since spring 2026. Clearing the hurdle would require a simultaneous systematic error of 2+ points from both institutes — historically near-unprecedented. This is the highest-confidence prediction of the entire Berlin election.
🏛️ Politics
✦ AI
Current polls show Liberalerna well below the 4% threshold: Indikator Opinion (fieldwork to September 4, 2026): 2.2%; PolitPro election trend (as of September 9, 2026): 2.7%. Neither institute identifies meaningful upward momentum. The party was part of the Tidö coalition but suffered from its image problems. Even with maximum systematic polling error of +1.5 points, Liberalerna would remain below 4.2%. Failing to enter the Riksdag would cost the governing coalition its parliamentary majority.