Brazil 2026 presidential election (October 4, 2026): No candidate wins an absolute majority in the first round — election goes to a runoff on October 25, 2026
Pending
✦ AI-generated prediction
Published on 30. August 2026
·
Predicted for 4. October 2026
·
Based on: Statistical Pattern
Current polls (Quaest, August 2026) show Lula (PT) at 38% and Flávio Bolsonaro (PL) at 31% in the first round. Brazilian electoral law (TSE, Constitution Art. 77) requires 50%+1 of valid votes to win in the first round. In a multi-candidate field, an absolute majority is virtually impossible. An open Cassandra.news prediction already forecasts Lula winning the runoff on October 25, 2026 — this prediction covers the logically prior event. No contradiction with the open forecast.
Data basis for this prediction
- Quaest-Umfrage August 2026: Erstrunde Lula 38%, F. Bolsonaro 31% (AS/COA Poll Tracker, 15. August 2026)
- Al Jazeera: 'Lula holds slim lead over Flávio Bolsonaro ahead of Brazil election' (15. August 2026)
- Brasilianische Verfassung Art. 77: Absolute Mehrheit (50%+1) im 1. Wahlgang erforderlich (TSE Brasil)
- Historisches Muster: Alle Brasilien-Präsidentschaftswahlen seit 1989 außer 2018 gingen in die Stichwahl (TSE)
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.