The Brazilian Federal Senate election for Maranhão is scheduled to take place on October 4, 2026. This market will resolve according to the candidate who wins the second-most valid votes of any candidate at the specified election. Candidates will be primarily ranked by order of valid votes won. If two or more candidates are tied for any position, ties will be broken by alphabetical order of the candidates’ listed full names as they appear in this market. This market will resolve to the candidate that occupies the second-highest finishing position after applying this ranking. If the result of this election isn't definitively 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).
Recent August 2026 polls from IPSensus, IPPI, and Véritas show Roseana Sarney (MDB) leading first-round intentions near 22-25% while André Fufuca (PP), Lahesio Bonfim (Novo), Weverton Rocha (PDT), and Eliziane Gama (PT) cluster within a few points for the remaining Senate seat in Maranhão. Trader odds reflect this fragmentation, with Fufuca and Sarney holding the clearest edges for second place amid eleven registered candidates and shifting alliances ahead of the October 4 election. The open second-vote dynamic, combined with low undecided levels and regional voting blocs, sustains the tight spread; late endorsements, turnout shifts in key municipalities, or clearer coalition signals could widen separation among the top contenders.