🏛️ Politics · Next Month

Brazil Presidential Election 2026: No candidate secures more than 50% of valid votes in the first round (4 October 2026); run-off scheduled for 25 October 2026 (confirmed via Tribunal Superior Eleitoral or Reuters by 6 October 2026)

Hit ✦ AI-generated prediction Published on 16. September 2026 · Predicted for 4. October 2026 · Based on: Historical Cycle

Probability

88%

Polymarket prices Flávio Bolsonaro (PL) at 53% and Lula (PT) at 46% as overall election winner — these probabilities reflect the full two-round outcome, not first-round vote shares. Brazilian electoral law requires an outright majority (>50% of valid votes) to avoid a run-off; historically, smaller candidates jointly attract 8–15% of votes, making a run-off structurally near-inevitable. In 2022: Lula 48.4%, Bolsonaro 43.2% — no majority. With Simone Tebet, Ciro Gomes, and further candidates in 2026, a sub-50% first round for all leading candidates is near-certain. Prediction markets and Brazilian election analysts assess run-off probability at ~88%.

Data basis for this prediction

Polymarket: Flávio Bolsonaro gewinnt Präsidentschaftswahl 2026: 53 % (Stand 16.09.2026)
Polymarket: Lula gewinnt Präsidentschaftswahl 2026: 46 % (Stand 16.09.2026)
TSE Brasilien: Art. 77 CF – absolute Mehrheitspflicht im 1. Wahlgang (tse.jus.br, 2026)
Präsidentschaftswahl Brasilien 2022: 1. Runde Lula 48,4 % / Bolsonaro 43,2 % (TSE, Okt. 2022)

Verdict: Hit

Die Vorhersage ist vollständig eingetreten. Im ersten Wahlgang am 4. Oktober 2026 erzielte kein Kandidat die absolute Mehrheit: Flávio Bolsonaro erhielt 47,03 % und Lula 45,16 % der gültigen Stimmen. Da die 50-%-Schwelle verfehlt wurde, wurde ein zweiter Wahlgang für den 25. Oktober 2026 angesetzt – exakt wie vorhergesagt. Quellen: Americas Quarterly ('Flávio Bolsonaro and Lula Advance to Brazil's Presidential Runoff') sowie Wikipedia (pt) zur eleição presidencial no Brasil em 2026, die beide Datum und Ergebnis bestätigen.

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