Recent polling from late August 2026 shows ex-governor Mauro Mendes (União) consistently leading consolidated vote intentions for Mato Grosso’s two Senate seats at 24–52%, with state deputy Janaina Riva (MDB) in second at 18–34% across Paraná Pesquisas, Quaest, and other surveys. Riva’s positioning benefits from her early August party convention launch, strong support among women voters, and established legislative profile on health and education. Mid-tier contenders including José Medeiros (PL), Pedro Taques (PSB), and Carlos Fávaro (PSD) remain clustered lower, while high undecided rates (up to 25%) and the dual-vote system sustain uncertainty around final ordering. Trader consensus on Riva for second place aligns with these trends ahead of the October 4 election, though shifts in alliances or turnout could alter the ranking.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedJanaina Riva 36%
Mauro Mendes 34%
Professor Nelson Ferreira 11.3%
Galvan 11.1%
$10,292 Vol.
$10,292 Vol.
Oct 4, 2026
Janaina Riva
42%
Mauro Mendes
34%
Professor Nelson Ferreira
11%
Galvan
11%
Jose Medeiros
7%
Pedro Taques
2%
Fávaro
7%
Beny Godoy
1%
Margareth Buzetti
<1%
Coronel Darwin
<1%
Janaina Riva 36%
Mauro Mendes 34%
Professor Nelson Ferreira 11.3%
Galvan 11.1%
$10,292 Vol.
$10,292 Vol.
Oct 4, 2026
Janaina Riva
$7,100 Vol.
42%
Mauro Mendes
$1,180 Vol.
34%
Professor Nelson Ferreira
$229 Vol.
11%
Galvan
$229 Vol.
11%
Jose Medeiros
$247 Vol.
7%
Pedro Taques
$364 Vol.
2%
Fávaro
$248 Vol.
7%
Beny Godoy
$240 Vol.
1%
Margareth Buzetti
$229 Vol.
<1%
Coronel Darwin
$229 Vol.
<1%
The Brazilian Federal Senate election for Mato Grosso 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 polling from late August 2026 shows ex-governor Mauro Mendes (União) consistently leading consolidated vote intentions for Mato Grosso’s two Senate seats at 24–52%, with state deputy Janaina Riva (MDB) in second at 18–34% across Paraná Pesquisas, Quaest, and other surveys. Riva’s positioning benefits from her early August party convention launch, strong support among women voters, and established legislative profile on health and education. Mid-tier contenders including José Medeiros (PL), Pedro Taques (PSB), and Carlos Fávaro (PSD) remain clustered lower, while high undecided rates (up to 25%) and the dual-vote system sustain uncertainty around final ordering. Trader consensus on Riva for second place aligns with these trends ahead of the October 4 election, though shifts in alliances or turnout could alter the ranking.
The Brazilian Federal Senate election for Mato Grosso 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).
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).
Market Opened: Aug 17, 2026, 6:03 AM ET
Volume
$10,292End Date
Oct 4, 2026Market Opened
Aug 17, 2026, 6:03 AM ETResolver
0x69c47De9D...The Brazilian Federal Senate election for Mato Grosso 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 polling from late August 2026 shows ex-governor Mauro Mendes (União) consistently leading consolidated vote intentions for Mato Grosso’s two Senate seats at 24–52%, with state deputy Janaina Riva (MDB) in second at 18–34% across Paraná Pesquisas, Quaest, and other surveys. Riva’s positioning benefits from her early August party convention launch, strong support among women voters, and established legislative profile on health and education. Mid-tier contenders including José Medeiros (PL), Pedro Taques (PSB), and Carlos Fávaro (PSD) remain clustered lower, while high undecided rates (up to 25%) and the dual-vote system sustain uncertainty around final ordering. Trader consensus on Riva for second place aligns with these trends ahead of the October 4 election, though shifts in alliances or turnout could alter the ranking.
The Brazilian Federal Senate election for Mato Grosso 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).
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).
Volume
$10,292End Date
Oct 4, 2026Market Opened
Aug 17, 2026, 6:03 AM ETResolver
0x69c47De9D...Recent polling from late August 2026 shows ex-governor Mauro Mendes (União) consistently leading consolidated vote intentions for Mato Grosso’s two Senate seats at 24–52%, with state deputy Janaina Riva (MDB) in second at 18–34% across Paraná Pesquisas, Quaest, and other surveys. Riva’s positioning benefits from her early August party convention launch, strong support among women voters, and established legislative profile on health and education. Mid-tier contenders including José Medeiros (PL), Pedro Taques (PSB), and Carlos Fávaro (PSD) remain clustered lower, while high undecided rates (up to 25%) and the dual-vote system sustain uncertainty around final ordering. Trader consensus on Riva for second place aligns with these trends ahead of the October 4 election, though shifts in alliances or turnout could alter the ranking.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated
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