Mato Grosso's October 2026 Senate contest for two seats features a fragmented field of roughly ten candidates, with recent Percent Brasil polling showing Mauro Mendes and Janaina Riva in a technical tie at 20% and 18.9% respectively. This closeness sustains elevated market odds on Riva for second place while keeping alternatives clustered near even money. Riva's recent polling gains and formal alignment with the Wellington Fagundes gubernatorial ticket have reinforced her position as the primary challenger. Mendes's decision to step down as governor to run adds name recognition but faces headwinds from ongoing investigations and vote-splitting among rivals including Fávaro, Medeiros, and Taques. Trader consensus reflects this competitive dynamic, where small shifts in alliances or turnout among key regional blocs could quickly reorder the top two finishers.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedJanaina Riva 55%
Mauro Mendes 31%
Galvan 6.8%
Jose Medeiros 7%
NEW
NEW
Oct 4, 2026
Janaina Riva
55%
Mauro Mendes
31%
Galvan
7%
Jose Medeiros
7%
Fávaro
6%
Coronel Darwin
5%
Professor Nelson Ferreira
4%
Beny Godoy
3%
Margareth Buzetti
3%
Pedro Taques
3%
Janaina Riva 55%
Mauro Mendes 31%
Galvan 6.8%
Jose Medeiros 7%
NEW
NEW
Oct 4, 2026
Janaina Riva
$4,065 Vol.
55%
Mauro Mendes
$593 Vol.
31%
Galvan
$96 Vol.
7%
Jose Medeiros
$114 Vol.
7%
Fávaro
$96 Vol.
6%
Coronel Darwin
$96 Vol.
5%
Professor Nelson Ferreira
$96 Vol.
4%
Beny Godoy
$96 Vol.
3%
Margareth Buzetti
$96 Vol.
3%
Pedro Taques
$96 Vol.
3%
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).Mato Grosso's October 2026 Senate contest for two seats features a fragmented field of roughly ten candidates, with recent Percent Brasil polling showing Mauro Mendes and Janaina Riva in a technical tie at 20% and 18.9% respectively. This closeness sustains elevated market odds on Riva for second place while keeping alternatives clustered near even money. Riva's recent polling gains and formal alignment with the Wellington Fagundes gubernatorial ticket have reinforced her position as the primary challenger. Mendes's decision to step down as governor to run adds name recognition but faces headwinds from ongoing investigations and vote-splitting among rivals including Fávaro, Medeiros, and Taques. Trader consensus reflects this competitive dynamic, where small shifts in alliances or turnout among key regional blocs could quickly reorder the top two finishers.
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
$5,440End 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).Mato Grosso's October 2026 Senate contest for two seats features a fragmented field of roughly ten candidates, with recent Percent Brasil polling showing Mauro Mendes and Janaina Riva in a technical tie at 20% and 18.9% respectively. This closeness sustains elevated market odds on Riva for second place while keeping alternatives clustered near even money. Riva's recent polling gains and formal alignment with the Wellington Fagundes gubernatorial ticket have reinforced her position as the primary challenger. Mendes's decision to step down as governor to run adds name recognition but faces headwinds from ongoing investigations and vote-splitting among rivals including Fávaro, Medeiros, and Taques. Trader consensus reflects this competitive dynamic, where small shifts in alliances or turnout among key regional blocs could quickly reorder the top two finishers.
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
$5,440End Date
Oct 4, 2026Market Opened
Aug 17, 2026, 6:03 AM ETResolver
0x69c47De9D...Mato Grosso's October 2026 Senate contest for two seats features a fragmented field of roughly ten candidates, with recent Percent Brasil polling showing Mauro Mendes and Janaina Riva in a technical tie at 20% and 18.9% respectively. This closeness sustains elevated market odds on Riva for second place while keeping alternatives clustered near even money. Riva's recent polling gains and formal alignment with the Wellington Fagundes gubernatorial ticket have reinforced her position as the primary challenger. Mendes's decision to step down as governor to run adds name recognition but faces headwinds from ongoing investigations and vote-splitting among rivals including Fávaro, Medeiros, and Taques. Trader consensus reflects this competitive dynamic, where small shifts in alliances or turnout among key regional blocs could quickly reorder the top two finishers.
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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