The Social Democrats (S) receive the mandate to form government after the September 13, 2026 Riksdag election and provide Sweden's new Prime Minister by October 31, 2026 (confirmed by Riksdag or SVT)
Pending
β¦ AI-generated prediction
Published on 3. September 2026
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Predicted for 31. October 2026
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Based on: Ongoing Event
Prediction markets assign the left bloc (S+V+MP) a win probability above 98% (Polymarket, lines.com, as of September 2026). Projections show Socialdemokraterna with approximately 111 seats as the clearly largest party; Liberalerna (L) fails the 4% threshold per the existing platform prediction β reducing the right-bloc base. Without L, the right bloc (M+SD+KD) would hold ~159 seats vs. left bloc (S+V+MP) ~164 seats. The Riksdag Speaker would then designate the S party leader as formateur. Historically, Swedish government formation has taken 4β6 weeks after the election (deadline: October 31).
Data basis for this prediction
- Polymarket: Sweden Parliamentary Election Winner β Linksblock >98% (Stand September 2026)
- lines.com / polyprediction.app: Social Democrats win 2026 Swedish election; next PM of Sweden odds
- ElectioMap: Sweden General Election 2026 β Live Results & Projected Seats
- Wahl zum Schwedischen Reichstag 2026 β de.wikipedia.org (Projektionen Stand September 2026)
Verdict: Pending
This prediction is still open. It will be evaluated automatically against real-world sources after its due date.
ποΈ Politics
β¦ 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 19β22%, 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%.
ποΈ Politics
β¦ AI
Both current Berlin polls place the FDP far below the 5% threshold: INSA (Sept 2β4, 2026): 3.0%; Infratest dimap (Aug 27β31, 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 β historically near-unprecedented. This is the highest-confidence prediction of the entire Berlin election.
ποΈ Politics
β¦ 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 TidΓΆ 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.