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icon for Mato Grosso Senate Election: 1st Place

Mato Grosso Senate Election: 1st Place

icon for Mato Grosso Senate Election: 1st Place

Mato Grosso Senate Election: 1st Place

Mauro Mendes 68%

Janaina Riva 19.9%

Jose Medeiros 2.7%

Galvan 2.0%

Polymarket

$15,958 Vol.

Mauro Mendes 68%

Janaina Riva 19.9%

Jose Medeiros 2.7%

Galvan 2.0%

Polymarket

$15,958 Vol.

icon for Mauro Mendes

Mauro Mendes

$13,671 Vol.

68%

icon for Janaina Riva

Janaina Riva

$454 Vol.

20%

icon for Jose Medeiros

Jose Medeiros

$197 Vol.

3%

icon for Galvan

Galvan

$290 Vol.

2%

icon for Fávaro

Fávaro

$472 Vol.

2%

icon for Professor Nelson Ferreira

Professor Nelson Ferreira

$209 Vol.

1%

icon for Margareth Buzetti

Margareth Buzetti

$173 Vol.

1%

icon for Beny Godoy

Beny Godoy

$167 Vol.

1%

icon for Coronel Darwin

Coronel Darwin

$188 Vol.

<1%

icon for Pedro Taques

Pedro Taques

$138 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 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 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).Mauro Mendes (União Brasil), the former Mato Grosso governor who stepped down in March to run, holds the strongest position for first place due to sustained polling leads in consolidated first- and second-choice scenarios, often exceeding 45% while rivals remain below 30%. Recent August and early September surveys from Paraná Pesquisas, Real Time Big Data, MT Dados, and Quaest confirm his edge over Janaina Riva (MDB) and a fragmented field including José Medeiros (PL), Pedro Taques (PSB), and Carlos Fávaro (PSD), reflecting his name recognition, business ties to agriculture and mining, and broad voter familiarity. An August Federal Police operation examining alleged state contract irregularities has not altered the trajectory in available data, with undecided voters still high ahead of the October 4 vote for the two Senate seats. Traders price this outcome at 67.5% as the clearest path to topping the ballot.

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 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 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).
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 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 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
$15,958
End Date
Oct 4, 2026
Market Opened
Aug 17, 2026, 6:03 AM ET
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 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 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).Mauro Mendes (União Brasil), the former Mato Grosso governor who stepped down in March to run, holds the strongest position for first place due to sustained polling leads in consolidated first- and second-choice scenarios, often exceeding 45% while rivals remain below 30%. Recent August and early September surveys from Paraná Pesquisas, Real Time Big Data, MT Dados, and Quaest confirm his edge over Janaina Riva (MDB) and a fragmented field including José Medeiros (PL), Pedro Taques (PSB), and Carlos Fávaro (PSD), reflecting his name recognition, business ties to agriculture and mining, and broad voter familiarity. An August Federal Police operation examining alleged state contract irregularities has not altered the trajectory in available data, with undecided voters still high ahead of the October 4 vote for the two Senate seats. Traders price this outcome at 67.5% as the clearest path to topping the ballot.

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 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 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).
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 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 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
$15,958
End Date
Oct 4, 2026
Market Opened
Aug 17, 2026, 6:03 AM ET

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Frequently Asked Questions

"Mato Grosso Senate Election: 1st Place" is a prediction market on Polymarket with 10 possible outcomes where traders buy and sell shares based on what they believe will happen. The current leading outcome is "Mauro Mendes" at 68%, followed by "Janaina Riva" at 20%. Prices reflect real-time crowd-sourced probabilities. For example, a share priced at 68¢ implies that the market collectively assigns a 68% chance to that outcome. These odds shift continuously as traders react to new developments and information. Shares in the correct outcome are redeemable for $1 each upon market resolution.

As of today, "Mato Grosso Senate Election: 1st Place" has generated $16K in total trading volume since the market launched on Aug 17, 2026. This level of trading activity reflects strong engagement from the Polymarket community and helps ensure that the current odds are informed by a deep pool of market participants. You can track live price movements and trade on any outcome directly on this page.

To trade on "Mato Grosso Senate Election: 1st Place," browse the 10 available outcomes listed on this page. Each outcome displays a current price representing the market's implied probability. To take a position, select the outcome you believe is most likely, choose "Yes" to trade in favor of it or "No" to trade against it, enter your amount, and click "Trade." If your chosen outcome is correct when the market resolves, your "Yes" shares pay out $1 each. If it's incorrect, they pay out $0. You can also sell your shares at any time before resolution if you want to lock in a profit or cut a loss.

The current frontrunner for "Mato Grosso Senate Election: 1st Place" is "Mauro Mendes" at 68%, meaning the market assigns a 68% chance to that outcome. The next closest outcome is "Janaina Riva" at 20%. These odds update in real-time as traders buy and sell shares, so they reflect the latest collective view of what's most likely to happen. Check back frequently or bookmark this page to follow how the odds shift as new information emerges.

The resolution rules for "Mato Grosso Senate Election: 1st Place" define exactly what needs to happen for each outcome to be declared a winner — including the official data sources used to determine the result. You can review the complete resolution criteria in the "Rules" section on this page above the comments. We recommend reading the rules carefully before trading, as they specify the precise conditions, edge cases, and sources that govern how this market is settled.