The competitive race for second place in Goiás’s two-seat Senate contest reflects a fragmented field of more than a dozen registered candidates, high undecided shares near 30 percent in recent surveys, and voter ability to select up to two names. Latest polling from mid-August shows Gustavo Gayer (PL) holding the clearest edge among challengers, followed closely by incumbent Vanderlan Cardoso (PSD), Dr. Zacharias Calil (MDB), and Gustavo Mendanha (PRD), all within or near margins of error. Gracinha Caiado (União) remains the clear leader for one seat, leaving the second highly sensitive to late shifts in turnout, regional alliances, and campaign momentum ahead of the October 4 vote.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedGustavo Gayer 46%
Vanderlan Cardoso 17.9%
Gustavo Mendanha 12%
Gracinha Caiado 11.0%
$26,545 Vol.
$26,545 Vol.
Oct 4, 2026
Gustavo Gayer
46%
Vanderlan Cardoso
18%
Gustavo Mendanha
14%
Gracinha Caiado
11%
Dr. Zacharias Calil
8%
Ernesto Roller
6%
Iure Castro
4%
Cintia Dias
3%
Guilherme Darques
<1%
Oséias Varão
<1%
Isaura Lemos
<1%
Gustavo Gayer 46%
Vanderlan Cardoso 17.9%
Gustavo Mendanha 12%
Gracinha Caiado 11.0%
$26,545 Vol.
$26,545 Vol.
Oct 4, 2026
Gustavo Gayer
$21,807 Vol.
46%
Vanderlan Cardoso
$740 Vol.
18%
Gustavo Mendanha
$291 Vol.
14%
Gracinha Caiado
$2,099 Vol.
11%
Dr. Zacharias Calil
$315 Vol.
8%
Ernesto Roller
$212 Vol.
6%
Iure Castro
$192 Vol.
4%
Cintia Dias
$310 Vol.
3%
Guilherme Darques
$191 Vol.
<1%
Oséias Varão
$189 Vol.
<1%
Isaura Lemos
$199 Vol.
<1%
The Brazilian Federal Senate election for Goiás 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).The competitive race for second place in Goiás’s two-seat Senate contest reflects a fragmented field of more than a dozen registered candidates, high undecided shares near 30 percent in recent surveys, and voter ability to select up to two names. Latest polling from mid-August shows Gustavo Gayer (PL) holding the clearest edge among challengers, followed closely by incumbent Vanderlan Cardoso (PSD), Dr. Zacharias Calil (MDB), and Gustavo Mendanha (PRD), all within or near margins of error. Gracinha Caiado (União) remains the clear leader for one seat, leaving the second highly sensitive to late shifts in turnout, regional alliances, and campaign momentum ahead of the October 4 vote.
The Brazilian Federal Senate election for Goiás 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, 5:59 AM ET
Volume
$26,545End Date
Oct 4, 2026Market Opened
Aug 17, 2026, 5:59 AM ETResolver
0x69c47De9D...The Brazilian Federal Senate election for Goiás 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).The competitive race for second place in Goiás’s two-seat Senate contest reflects a fragmented field of more than a dozen registered candidates, high undecided shares near 30 percent in recent surveys, and voter ability to select up to two names. Latest polling from mid-August shows Gustavo Gayer (PL) holding the clearest edge among challengers, followed closely by incumbent Vanderlan Cardoso (PSD), Dr. Zacharias Calil (MDB), and Gustavo Mendanha (PRD), all within or near margins of error. Gracinha Caiado (União) remains the clear leader for one seat, leaving the second highly sensitive to late shifts in turnout, regional alliances, and campaign momentum ahead of the October 4 vote.
The Brazilian Federal Senate election for Goiás 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
$26,545End Date
Oct 4, 2026Market Opened
Aug 17, 2026, 5:59 AM ETResolver
0x69c47De9D...The competitive race for second place in Goiás’s two-seat Senate contest reflects a fragmented field of more than a dozen registered candidates, high undecided shares near 30 percent in recent surveys, and voter ability to select up to two names. Latest polling from mid-August shows Gustavo Gayer (PL) holding the clearest edge among challengers, followed closely by incumbent Vanderlan Cardoso (PSD), Dr. Zacharias Calil (MDB), and Gustavo Mendanha (PRD), all within or near margins of error. Gracinha Caiado (União) remains the clear leader for one seat, leaving the second highly sensitive to late shifts in turnout, regional alliances, and campaign momentum ahead of the October 4 vote.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated
Beware of external links.
Beware of external links.
Frequently Asked Questions