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The Piauí gubernatorial election is scheduled to take place in Brazil on October 4, 2026, with a runoff on October 25, 2026, if no candidate receives a majority of the valid votes in the first round. This market will resolve according to the candidate who wins this election. Temporary, interim, or placeholder governors appointed by any means before the specified election will not be considered. If the result of this election isn't known by June 30, 2027, 11:59 PM ET, the market will resolve to "Other". This market will resolve based on the result of the election, as indicated by a consensus of credible reporting. If there is ambiguity, this market will resolve based solely on the official results as reported by the Brazilian government, specifically the Superior Electoral Court (Tribunal Superior Eleitoral, TSE) (e.g., www.tse.jus.br/eleicoes/resultados-eleicoes).
Rafael Fonteles, the incumbent PT governor of Piauí seeking re-election, holds a dominant position in the October 4, 2026, first-round contest. Multiple polls conducted through late August show him capturing 56–73% of valid votes, driven by approval ratings of 67–72% for his administration and consistent leads of 40+ points over main challenger Joel Rodrigues of the PP. His broad coalition, formalized in July conventions, and record of advancing education initiatives have reinforced support among key voting blocs. Traders price his victory at 98.6% as the implied probability, reflecting this sustained polling margin. A late scandal, sharp deterioration in state finances, or unusually high opposition turnout could narrow the gap, though no such developments have emerged in recent months.