🏛️ Politics · Next Month

Brazilian presidential election (4 October 2026): No candidate secures an absolute majority in the first round – runoff on 25 October 2026 required (confirmed by TSE by 5 October 2026)

Hit ✦ AI-generated prediction Published on 5. September 2026 · Predicted for 4. October 2026 · Based on: Historical Cycle

Probability

87%

In Brazil's first round presidential election on 4 October 2026, incumbent Luiz Inácio Lula da Silva (PT, age 80) faces Flávio Bolsonaro (PL) as the main candidates. Current polls (AS/COA, September 2026) show neither candidate near the absolute majority threshold of 50%+1 valid votes. In modern Brazilian electoral history since 1994, not a single competitive race avoided a runoff – structural polarization is too deep. The existing open platform prediction (Lula wins runoff on 25 October) implicitly treats the runoff as a given premise. Polymarket shows no separate odds for first-round outcome.

Data basis for this prediction

AS/COA Poll Tracker: Brasilianische Präsidentschaftswahl 2026 – Lula vs. Flávio Bolsonaro, kein Kandidat nahe 50% (as-coa.org, September 2026)
Brasilianisches Wahlgesetz (Lei nº 9.504/97): Stichwahl erforderlich, wenn kein Kandidat >50% der gültigen Stimmen im 1. Wahlgang (TSE)
Historische Brasilianische Stichwahl-Frequenz: Alle Präsidentschaftswahlen 1994–2022 endeten in 2. Runde (TSE/IBGE)
Flávio Bolsonaro (PL): Kandidatur bestätigt, unterstützt durch Jair Bolsonaro-Netzwerk (Reuters, August 2026)

Verdict: Hit

Die Vorhersage ist vollständig eingetreten. Im ersten Wahlgang am 4. Oktober 2026 erzielte Flávio Bolsonaro (PL) 47,03 % und Lula (PT) 45,16 % der gültigen Stimmen – keiner überschritt die nötige absolute Mehrheit von 50 %+1. Der TSE bestätigte die Notwendigkeit einer Stichwahl am 25. Oktober 2026. Quellen: TSE-Pressemitteilung (tse.jus.br), Carta Capital (cartacapital.com.br/politica/tse-encerra-apuracao-do-1o-turno/), Wikipedia EN (2026 Brazilian general election).

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