Recent polls, including AtlasIntel's survey from March 18-23 showing President Luiz Inácio Lula da Silva at 45.9% and Senator Flávio Bolsonaro at 40.1% in first-round voting intentions, position both as clear frontrunners to advance to Brazil's October 4 presidential runoff under the two-round system requiring over 50% for outright victory. Flávio has narrowed Lula's lead amid economic concerns and the incumbent's health issues, with other contenders like São Paulo Governor Tarcísio de Freitas polling below 6%; Paraná Governor Ratinho Júnior's March 23 withdrawal further consolidates right-wing support behind Flávio. Upcoming party conventions and candidate registrations by mid-August could solidify fields, while undecided voters (5-21%) and regional dynamics in swing Northeast and South remain pivotal factors influencing trader assessments of top-two finishers.
Experimental AI-generated summary referencing Polymarket data · UpdatedWhich candidates will advance to Brazil's presidential runoff?
Which candidates will advance to Brazil's presidential runoff?
$206,072 Vol.
Flavio Bolsonaro
87%
Luiz Inácio Lula da Silva
70%
Fernando Haddad
10%
Tarcisio de Frietas
5%
Michelle Bolsonaro
4%
Jair Bolsonaro
4%
$206,072 Vol.
Flavio Bolsonaro
87%
Luiz Inácio Lula da Silva
70%
Fernando Haddad
10%
Tarcisio de Frietas
5%
Michelle Bolsonaro
4%
Jair Bolsonaro
4%
This market will resolve to "Yes" if the listed candidate advances to Brazil's presidential runoff election or otherwise wins outright in the first round. Otherwise, this market will resolve to "No".
If the president is decided in the first round of the election but the listed candidate is not the winner or the result of this election isn't known definitively by June 30, 2027, 11:59 PM ET, the market will resolve to "No".
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., https://dadosabertos.tse.jus.br/).
Market Opened: Sep 18, 2025, 1:53 PM ET
Resolver
0x65070BE91...This market will resolve to "Yes" if the listed candidate advances to Brazil's presidential runoff election or otherwise wins outright in the first round. Otherwise, this market will resolve to "No".
If the president is decided in the first round of the election but the listed candidate is not the winner or the result of this election isn't known definitively by June 30, 2027, 11:59 PM ET, the market will resolve to "No".
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., https://dadosabertos.tse.jus.br/).
Resolver
0x65070BE91...Recent polls, including AtlasIntel's survey from March 18-23 showing President Luiz Inácio Lula da Silva at 45.9% and Senator Flávio Bolsonaro at 40.1% in first-round voting intentions, position both as clear frontrunners to advance to Brazil's October 4 presidential runoff under the two-round system requiring over 50% for outright victory. Flávio has narrowed Lula's lead amid economic concerns and the incumbent's health issues, with other contenders like São Paulo Governor Tarcísio de Freitas polling below 6%; Paraná Governor Ratinho Júnior's March 23 withdrawal further consolidates right-wing support behind Flávio. Upcoming party conventions and candidate registrations by mid-August could solidify fields, while undecided voters (5-21%) and regional dynamics in swing Northeast and South remain pivotal factors influencing trader assessments of top-two finishers.
Experimental AI-generated summary referencing Polymarket data · Updated

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