🏛️ Politics · Next Month

Brazilian presidential election (October 4, 2026): No candidate wins an absolute majority of valid votes in the first round — runoff on October 25, 2026 required (confirmed by Tribunal Superior Eleitoral or Reuters by October 5, 2026)

Pending ✦ AI-generated prediction Published on 19. September 2026 · Predicted for 4. October 2026 · Based on: Statistical Pattern

Probability

90%

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.

Data basis for this prediction

Datafolha: Pesquisa Presidencial Brasil – Lula 46 %, Flávio Bolsonaro 44 % (Stichwahl-Simulation, 17.09.2026)
Polymarket: 'Brazil Presidential Election First Round Winner' – Lula 71 %, Volumen $129K (Stand: 19.09.2026)
AS/COA Election Poll Tracker Brazil 2026 (americas-society.org)
Wikipedia: 2026 Brazilian general election – Erstrunden-Schwelle, Stichwahl 25.10.2026

Verdict: Pending

This prediction is still open. It will be evaluated automatically against real-world sources after its due date.

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