Brazilian Presidential Runoff (October 25, 2026): Luiz Inácio Lula da Silva (PT) wins re-election against Flávio Bolsonaro (PL) (confirmed by Tribunal Superior Eleitoral or Reuters by October 26, 2026)
Hit
✦ AI-generated prediction
Published on 19. September 2026
·
Predicted for 25. October 2026
·
Based on: Statistical Pattern
The October 25 runoff is effectively a neck-and-neck race. Datafolha (September 15–17, 2026) shows Lula 46% vs. Flávio Bolsonaro 44% — within the ±2pp margin of error. Quaest (September 3–6) showed 41:41. AtlasIntel puts Bolsonaro narrowly ahead. In round one, Lula leads 39% to 36%. Historically in Brazil since 1994, the first-round leader has always won the runoff. Lula's incumbency advantage, left-coalition support and traditional PT base mobilization give him a structurally slight edge. Aggregated forecasts imply just above 50% for Lula — this is a high-uncertainty scenario. Bookmaker odds place Lula at ~52%.
Data basis for this prediction
- Datafolha-Umfrage, 15.–17.09.2026: Lula 46 % vs. Flávio Bolsonaro 44 % (±2 PP, US News/World)
- Quaest-Umfrage, 3.–6.09.2026: Lula 41 % vs. Flávio Bolsonaro 41 % (US News/World)
- AS/COA Poll Tracker: Brasilianische Präsidentschaftswahl 2026 — aggregierte Umfragedaten Sept. 2026
- Historische Analyse TSE: Erstplatzierter Runde 1 gewinnt Stichwahl in allen brasilianischen Wahlen seit 1994
Verdict: Hit
Lula gewann die Stichwahl am 25. Oktober 2026 mit 51,79 % der gültigen Stimmen gegen Flávio Bolsonaros 48,21 % (64.256.232 zu 59.826.041 Stimmen), bestätigt durch das Tribunal Superior Eleitoral (Quellen: CNBC, NPR, ZDF heute, ORF). Die Kernaussage der Vorhersage – Lula-Sieg in der Stichwahl – trat ein. Allerdings erwies sich die historische Begründung als falsch: Lula hatte den ersten Wahlgang verloren (45,16 % zu Bolsonaros 47,03 %), gewann aber trotzdem die Stichwahl – das erste Mal seit Rückkehr zur Direktwahl 1989, dass ein Kandidat nach einem Erstrundenrückstand das Rennen gewann. Die prognostizierte Wahrscheinlichkeit von 52 % spiegelte das knappe Ergebnis realistisch wider.
🏛️ Politics
✦ AI
Democrats won both chambers historically at the November 3, 2026 midterms (Senate 54:44, House 258 seats — largest majority since 1993). Trump's disapproval rating stands at 62% (FiveThirtyEight, Nov 2026). Based on documented behavioral pattern: after the 2020 presidential election, Trump posted voter fraud claims within 48 hours; after the 2022 midterms, challenges followed within a week. Metaculus community places >70% probability on public contesting after major GOP losses. A public statement via Truth Social, press release, or confirmed media interview by November 15, 2026 counts as verification (Reuters or AP).
🏛️ Politics
✦ AI
Ukrainian, US, and Russian negotiators convene November 10–11 in Abu Dhabi. Russia conducted large-scale long-range strikes on Ukrainian energy infrastructure and logistics hubs on November 3–4; Ukraine responded with drone strikes on the Ryazan refinery. Positions on territory and security guarantees remain far apart. No Polymarket or Kalshi market covers this specific event; historical base rate for failure of comparable trilateral talks: >80%.
🏛️ Politics
✦ AI
Spain holds a general election on 29 November 2026. Polymarket prices Feijóo as next PM at 85%, Kalshi at 82% — both serve as anchors. A separate Polymarket market gives PP+Vox a 92% probability of a joint majority (>176/350 seats). Current polls (Sondaxe) show PP at 29.2% narrowly ahead of PSOE (26.9%); Vox is tracking slightly higher. Feijóo failed to form a government in 2023, but market odds reflect the lesson learned: PP+Vox is now seen as stable enough. No deviation from market anchor warranted.