Swedish Riksdag Election (September 13, 2026): Tidö Coalition (M+SD+KD+L) Fails to Achieve a Parliamentary Majority of 175 out of 349 Riksdag Seats (confirmed via Valmyndigheten)
Pending
✦ AI-generated prediction
Published on 27. August 2026
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Predicted for 13. September 2026
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Based on: Statistical Pattern
Current polls (PolitPro.eu, Wikipedia aggregate, as of August 2026): M 17.6%, SD 19.3%, KD 6.4%, L 2.0% – combined 45.3%. At an assumed turnout of ~84%, this corresponds mathematically to approximately 158 seats – well below the required majority of 175. Compounding factor: Liberalerna (L) at 2.0% is well below the 4% threshold and, per open prediction, does not enter the Riksdag, reducing the coalition to M+SD+KD ≈ 43.3% (~151 seats). Even with a maximum polling error of +3 pp for the bloc, no majority is achievable. No Polymarket market found for Tidö coalition majority.
Data basis for this prediction
- PolitPro.eu Schweden August 2026: M 17,6 %, SD 19,3 %, KD 6,4 %, L 2,0 % (politpro.eu, 27.08.2026)
- Wikipedia 2026 Swedish general election: Umfrageaggregat August 2026 (en.wikipedia.org)
- Valmyndigheten: Riksdag 349 Sitze, Mehrheit bei 175 (val.se)
- Offene Cassandra-Vorhersage: Liberalerna (L) scheitert an der 4 %-Sperrklausel
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.