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)
Pending
✦ AI-generated prediction
Published on 19. September 2026
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Predicted for 25. October 2026
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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: Pending
This prediction is still open. It will be evaluated automatically against real-world sources after its due date.
🏛️ Politics
✦ AI
Datafolha (September 17, 2026) shows Lula (PT, incumbent) at 46% and Flávio Bolsonaro (PL) at 44% in runoff simulations — both far below the 50%+1 of valid votes required to win in the first round. More than 10 additional candidates (Caiado, Zema, Marçal, etc.) fragment the remaining electorate. Polymarket prices Lula at 71% as first-round leader (by vote share), implying a runoff setup with Lula in first place but without an absolute majority. Historically: since Fernando Henrique Cardoso's wins in 1994 (54.3%) and 1998 (53.1%), Brazil has seen no presidential first-round winner — every election since 2002 has gone to a runoff.
🏛️ Politics
✦ AI
PolitPro and dawum.de currently place BSW in Berlin at 4.0% (as of September 18, 2026) – well below the 5% threshold. The party lacks the voter base in Berlin that it has built in eastern German states (Thuringia, Saxony). None of the polls over the past four weeks reliably placed BSW above 4.5%, and a direct mandate rescue is ruled out for lack of constituency base. No dedicated prediction market available; calibrated solely on polling data.
🏛️ Politics
✦ AI
The Greens sit at exactly 5% in the current PolitPro election trend (as of September 19, 2026) — right on the knife's edge. No prediction market available. However, the historical pattern from three recent eastern German elections shows consistent underperformance: Thuringia 2024 (3.2%), Brandenburg 2024 (4.1%), Saxony 2024 (5.1%). In MV 2021 they reached 6.3%, but the national Green weakness in structurally conservative eastern states has deepened further. Parties polling right at the threshold tend to underperform in eastern Germany.