Flávio Bolsonaro (PL) wins the Brazilian presidential runoff on October 25, 2026 against Luiz Inácio Lula da Silva (PT) (confirmed by TSE Brazil or AP by October 26, 2026)
Miss
✦ AI-generated prediction
Published on 3. October 2026
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Predicted for 25. October 2026
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Based on: Speculative
Polymarket has ~57% for Bolsonaro, Kalshi likewise ~57%. Runoff polls show a statistical tie: Quaest 42%–42%, Datafolha 47%–45% for Lula. Lula won the first round (October 4) with ~48.4% vs. Bolsonaro's ~43.2%. Markets price in that Bolsonaro's right-wing voter base is more mobilized in the runoff and smaller candidates (Caiado/PSD ~5%) migrate predominantly to Bolsonaro. Slight downward adjustment to 55% from market level 57%: Lula's strength in the first round and the historical pattern of Brazilian first-round leaders frequently winning runoffs are factored in.
Data basis for this prediction
- Polymarket Brasilien Präsidentschaftswahl 2026: Bolsonaro ~57%, Lula ~43% (Stand 3. Oktober 2026)
- Kalshi Brasilien Gesamtsieg-Wahrscheinlichkeit: Bolsonaro ~57% (Stand 3. Oktober 2026)
- Datafolha Stichwahl-Simulation: Lula 47%, Bolsonaro 45% (24. September 2026)
- Erstwahlergebnis 4. Oktober 2026: Lula ~48,4%, Bolsonaro ~43,2% (TSE Brasilien / Bloomberg)
Verdict: Miss
Lula (PT) gewann die Stichwahl am 25. Oktober 2026 mit ca. 51,75 % gegen Flávio Bolsonaro (PL) mit ca. 48,25 % (≈4,4 Mio. Stimmen Vorsprung, bestätigt durch TSE Brasilien). Die Vorhersage lag falsch: Trotz Polymarket/Kalshi-Odds von ~57 % für Bolsonaro mobilisierte Lula – entgegen der Markterwartung – seine Wählerschaft in der Stichwahl stärker. Sein erster Wahlgang-Vorsprung (48,4 % vs. 43,2 %) erwies sich als stabiler Indikator als die Stichwahl-Umfragen oder die Prediction-Märkte suggerierten. Quellen: NPR (npr.org/2026/10/25/…), CNN (cnn.com/2026/10/26/…), ORF (orf.at/stories/3446153/), ZDF heute (zdfheute.de).
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