The tight contest for second place in Piauí's October 2026 Senate race stems from consistent polling showing three leading contenders—Marcelo Castro (MDB), Júlio César (PSD), and Ciro Nogueira (PP)—in technical ties for the two available seats, with recent Datafolha and earlier AtlasIntel and Amostragem surveys placing them within margins of error amid 12-18% undecided or blank responses. Castro and Júlio César benefit from alignment with the incumbent governor's coalition, while Nogueira faces elevated rejection in some samples and separate legal scrutiny earlier in the cycle. The large field of minor candidates and voter choice of two senators further fragments support, sustaining equilibrium in trader assessments. Late-campaign factors such as turnout shifts, final endorsements, or coalition adjustments could reorder the second spot before election day.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedPiauí Senate Election: 2nd Place
Julio Cesar 39.5%
Ciro Nogueira 31%
Marcelo Castro 15%
Alexandre Mariano <1%
$23,746 Vol.
$23,746 Vol.

Julio Cesar
39%

Ciro Nogueira
31%

Marcelo Castro
15%

Alexandre Mariano
1%

Maria Madalena Nunes
1%

Francinaldo Leão
1%

Tiago Junqueira
1%

Toinho Dufrango
1%

Jardenya Bezerra
<1%

Major Paulo Roberto
<1%

Cloves José
<1%

Antônio José Lira
<1%

Pastor Sena
<1%

Irmão Evandro Marques
<1%

Dionisio Carvalho
<1%

Missionário Evandro Craveiro
<1%

Antônio Barros
<1%

Danniel Rocha
<1%

Jorge Lopes
<1%

Pedro Laurentino
<1%
Julio Cesar 39.5%
Ciro Nogueira 31%
Marcelo Castro 15%
Alexandre Mariano <1%
$23,746 Vol.
$23,746 Vol.

Julio Cesar
39%

Ciro Nogueira
31%

Marcelo Castro
15%

Alexandre Mariano
1%

Maria Madalena Nunes
1%

Francinaldo Leão
1%

Tiago Junqueira
1%

Toinho Dufrango
1%

Jardenya Bezerra
<1%

Major Paulo Roberto
<1%

Cloves José
<1%

Antônio José Lira
<1%

Pastor Sena
<1%

Irmão Evandro Marques
<1%

Dionisio Carvalho
<1%

Missionário Evandro Craveiro
<1%

Antônio Barros
<1%

Danniel Rocha
<1%

Jorge Lopes
<1%

Pedro Laurentino
<1%
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, 6:13 AM ET
Resolver
0x69c47De9D...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).
Resolver
0x69c47De9D...The tight contest for second place in Piauí's October 2026 Senate race stems from consistent polling showing three leading contenders—Marcelo Castro (MDB), Júlio César (PSD), and Ciro Nogueira (PP)—in technical ties for the two available seats, with recent Datafolha and earlier AtlasIntel and Amostragem surveys placing them within margins of error amid 12-18% undecided or blank responses. Castro and Júlio César benefit from alignment with the incumbent governor's coalition, while Nogueira faces elevated rejection in some samples and separate legal scrutiny earlier in the cycle. The large field of minor candidates and voter choice of two senators further fragments support, sustaining equilibrium in trader assessments. Late-campaign factors such as turnout shifts, final endorsements, or coalition adjustments could reorder the second spot before election day.
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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