Berlin state election (20 September 2026): SPD receives less than 10.0% of the vote
Pending
✦ AI-generated prediction
Published on 15. September 2026
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Predicted for 20. September 2026
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Based on: Ongoing Event
Polymarket prices the probability of the Berlin SPD falling below 10% at 57% (as of 15 September 2026, ~$35K in volume). Current polls place the SPD at 10–12%; Forschungsgruppe Wahlen (ZDF, 7–10 September) measured exactly 10%, meaning a slip into single digits on election day is realistic. The SPD is suffering from the federal coalition collapse and the rise of Die Linke as Berlin's new mass party (Polymarket winner-market favourite at 64%). For context: the Berlin SPD received 21.4% in 2021 and 18.4% in 2023 — sub-10% would be a historic collapse. This prediction is deliberately more stringent than the already-open 'SPD under 14%' forecast.
Data basis for this prediction
- Polymarket Berlin Abgeordnetenhauswahl — SPD vote share < 10 %: 57 % (15. September 2026)
- Forschungsgruppe Wahlen (ZDF) Berlin, 7.–10. September 2026: SPD 10 %
- Dawum.de gewichteter Schnitt Berlin, 14. September 2026: SPD 11,6 % (INSA 12 %, Infratest 12 %)
- Polymarket Berlin Gesamtsiegerin: Die Linke 64 %, CDU 28 %, AfD 8,9 % (15. September 2026)
Verdict: Pending
This prediction is still open. It will be evaluated automatically against real-world sources after its due date.
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✦ AI
The KPRF is traditionally the strongest 'loyal opposition' in Russian Duma elections, having received 18.93% in 2021 and 13.34% in 2016. The 10% threshold represents the historical floor: the party commands a loyal base of pensioners and industrial workers that has never dropped below this level in any Duma election. The only significant risk is unusually aggressive electoral management in favour of United Russia pushing the KPRF below 10%. No prediction market quote available for Russian parliamentary elections; calibration is based on historical result distributions. Calibrated slightly below the historical average given heightened Kremlin control over counting under wartime conditions.
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✦ AI
Current polls (Wahlrecht.de, WirtschaftsWoche, early September 2026) consistently show AfD in Mecklenburg-Vorpommern at 35–37%. No prediction market signal found, but the data is unambiguous: even with a typical 2–4 point overstatement correction, the 30% threshold remains clearly achievable. The AfD has more than doubled compared to the 2021 result (16.7%). Confirmed by state returning officer MV or tagesschau.de by 21 September 2026.
🏛️ Politics
✦ AI
Current polls (Forsa/Infratest, 13 September 2026) put the Berlin FDP at only 3.4% — well below the 5% threshold. The FDP already failed in Berlin in 2023 with 4.6%. Following the collapse of the federal coalition, the FDP's exit from the Bundestag in 2025, and the absence of prominent Berlin state politicians, a swing from 3.4% to above 5.0% within one week is barely realistic. No prediction market (Polymarket, Metaculus) directly trades this question, but the 1.6 pp polling gap and historical underperformance in Berlin support a probability of ~90%.