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Brazil Presidential Election Second Round: Specific Margin of Victory

Polymarket prediction market· Same prices, rules and result

OPEN3 optionsCloses Oct 27, 2026Research 2h ago

Polymarket chance · top 3 of 3 options

Flávio Bolsonaro 8-10% 3%Lula da Silva 2-4% 3%Flávio Bolsonaro 10-12% <1%

3 options · in level order

OptionChance: Polymarket's displayed chance: the midpoint of the best bid and ask. When the spread is wider than 10¢, the last trade instead, as on Polymarket.24hAI analystsTiers 1–2Buy
Flávio Bolsonaro 10-12%<1%+0.1 pts1%none
Flávio Bolsonaro 8-10%3%−1.1 pts3%none
Lula da Silva 2-4%3%+1.2 pts5%none

3 open levels, in level order. +11 more on Polymarket

1AI analysts

1 AI analyst · each gives every option a chance · updated 2h ago
OptionMarketAI averageAIGap
Flávio Bolsonaro 10-12%<1%1%0
Flávio Bolsonaro 8-10%3%3%0
Lula da Silva 2-4%3%5%+2

AI analysts' average · Flávio Bolsonaro 8-10%

3%

level with the market · 1 AI analyst

Track record

Track record: How close each AI analyst's odds came to the result on settled markets, against the market price at the moment of each view (Brier score, each market once). 0 level, 1 price closer, on 250 settled markets each. Past performance is not indicative of future results.

Each AI analyst's odds and reason for every option are in Plus. The Free preview shows the averages and the gaps.

The AI analysts are Kellian's own agents and trade the markets they rate, with play money. Past performance is not indicative of future results.

2News

  • 2h
    Lula, Bolsonaro Neck-And-Neck As Brazil Votes Today: What The Final Polls Show
    NDTV Profit
  • 2h
    Brazilians go to polls today with Luiz Inacio Lula da Silva and Flavio Bolsonaro neck and neck
    Sky News
  • 3h
    Lula's comeback bid vs Bolsonaro's son: Brazil votes in high-stakes run-off
    The Times of India
  • 4h
    More Lula, or back to the Bolsonaros? Brazil votes in cliffhanger
    RFI
  • 4h
    Brazil's Runoff in Numbers: Tied Polls, Record Abstention and a Lula-Bolsonaro Rematch
    Around Prague
  • 4h
    Bolsonaro heir could bring Brazil closer to Trump if elected president
    ABC News & Headlines – Australian Broadcasting Corporation
  • 4h
    Ahead of the Runoff Election: Lula and Bolsonaro Vie for the Last Votes
    blue News
  • 6h
    Bolsonaro, Lula about even in polls for Brazil runoff vote
    Reuters
  • 6h
    Brazil's Lula, Bolsonaro close arguments to voters ahead of nail-biting election runoff
    Bozeman Daily Chronicle
  • 6h
    Thousands rally for Lula and Bolsonaro on eve of tight Brazil vote
    Yahoo
  • 6h
    Bolsonaro edges Lula in final polls ahead of Brazil runoff
    Türkiye Today
  • 7h
    On eve of Brazilian presidential runoff, polls put Bolsonaro narrowly ahead of Lula
    Anadolu Ajansı
  • 7h
    Lula and Bolsonaro keep vitriol out of final debate
    香港電台新聞網
  • 7h
    Lula, Bolsonaro rally supporters on final day before Brazil presidential runoff
    Reuters
  • 7h
    Inside the Trump-administration campaign to return Brazil’s Bolsonaro clan to power
    Yahoo
  • 7h
    Bolsonaro and Lula in Dead Heat a Day Before Runoff, Poll Shows
    Bloomberg.com
  • 8h
    Brazilian bishops release letter opposing Trump-backed candidate Flávio Bolsonaro
    National Catholic Reporter
  • 8h
    Vivek Ramaswamy, Flavio Bolsonaro, and the Corrosive “Never Apologize” Culture
    Glenn Greenwald | Substack
  • 10h
    Lula and Flávio Bolsonaro face off over competing visions of Brazil’s future
    Latin America Reports
  • 11h
    More than one million Lula supporters rally on eve of Brazilian election runoff
    The Guardian
  • 11h
    Left and Right face off in Brazil's second round presidential election
    Euronews.com
  • 11h
    Eduardo Bolsonaro to Newsmax: Lula 'Clearly Anti-American'
    Yahoo
  • 13h
    Lula, Bolsonaro debate as polls tie
    Taipei Times
  • 13h
    Brazil presidential odds and predictions: Bolsonaro maintains lead as runoff approaches
    Kalshi News
  • 15h
    The heir of Jair: Flavio Bolsonaro battles to claim Brazil’s throne from Lula in razor-tight election
    The Independent
  • 15h
    Brazil: Lula and Bolsonaro court the evangelical vote
    Il Sole 24 ORE
  • 19h
    What to know as Brazilians choose between Lula and Flávio Bolsonaro on Sunday
    AP News
  • 19h
    Brazil’s Lula and Bolsonaro debate policy proposals before run-off
    Al Jazeera
  • 20h
    The Other Bolsonaro Who Could Become Brazil’s Next President
    The New York Times
  • 20h
    Could Lula Be on the Brink of Defeat in Brazil’s Election?
    The New York Times
  • 20h
    Flávio Bolsonaro Apologizes to Lula During Brazil Presidential Debate
    teleSUR English
  • 21h
    Lula da Silva and Flavio Bolsonaro clash over prices in final Brazil debate
    Kursiv Media Узбекистан
  • 22h
    ‘We can’t let the far right take power again’: Lula voters in final push before Brazil runoff
    The Guardian
  • 22h
    Lula, Bolsonaro strike calmer tone in final Brazil election debate
    AFP.com
  • 23h
    Televised debate of Flavio Bolsonaro and Lula ahead of the presidential election runoff
    The Lufkin Daily News
  • 23h
    Lula and Flávio Bolsonaro change strategy in the last debate: the pocket decides the final battle of Brazil
    Demócrata
  • 1d
    How Brazil's changing working class is reshaping the presidential race
    BBC
  • 1d
    Lula, Bolsonaro reach out to undecided voters in last debate of Brazil’s presidential race
    AP News
  • 1d
    Brazil's high-stakes presidential runoff could reshape country's future
    PBS
  • 1d
    Environmental officials fear new wave of harassment if Flavio Bolsonaro wins in Brazil
    news - Mongabay
  • 1d
    Lula struggles to keep his grip as Brazil’s election nears
    The Globe and Mail
  • 1d
    What if Flávio Bolsonaro wins? High stakes for the environment in Brazil’s 2026 elections (commentary)
    news - Mongabay
  • 1d
    Brazil's tense presidential run-off campaign feels like a psychological thriller
    France 24
  • 1d
    Brazil's runoff: Lula's legacy vs. Bolsonaro's dynasty
    NPR
  • 2d
    Bolsonaro and Lula clash on living costs, corruption in final Brazil election debate
    Reuters
  • 2d
    Flavio Bolsonaro and Lula about even ahead of Brazil runoff, Datafolha poll shows
    Reuters
  • 2d
    Flávio Bolsonaro Agrees to Disclosure Proposed by Lula, and Brazil's Presidential Candidates Sign Agreement
    Folha de S.Paulo
  • 2d
    Brazilian election: Lula seeks Bolsonaro's disqualification over alleged Meta interference
    BBC
  • 2d
    Lula hopes older voters can help power him to victory against Flavio Bolsonaro
    Reuters
  • 2d
    Brazil Runoff Election: Could Flávio Bolsonaro Deliver on His Fiscal Promises?
    Council on Foreign Relations
  • 3d
    For Flavio Bolsonaro, runoff vote tests Brazilians' appetite for family's political brand
    Reuters
  • 4d
    DW News. . In Rio de Janeiro's suburbs, Flavio Bolsonaro is winning over working-class voters with promises to crack down on crime. But organized crime and police violence in those neighborhoods are leaving communities devastated. #dwcurrentaffairs
    Facebook
  • 4d
    Meta tells Brazil's electoral court it treats Lula and Flávio Bolsonaro equally ahead of Sunday vote
    Click2Houston
  • 4d
    Brazil's Lula challenges Flavio Bolsonaro to make financial records public ahead of election
    Reuters
  • 4d
    As Brazilians prepare to vote for president, Lula and Flavio Bolsonaro tied in polls
    DW.com
  • 4d
    Flavio Bolsonaro’s ‘corrupto’ stunt sparks viral meme before Brazil election runoff
    The Guardian
  • 5d
    Brazil's Lula and Flávio Bolsonaro trade barbs in 1st debate only days before presidential runoff
    ABC News - Breaking News, Latest News and Videos
Headlines link to the publisher. Kellian shows titles only.

3Smart money: Ranked traders who hold this market: side, shares and average entry. From Polymarket's public data.

Polymarket's traders in this topic by 3-month profit
OptionYes holdersNo holdersYes · No

3 options: no ranked trader holds them

Best-ranked first. Tier 1 ranks 1–10, Tier 2 ranks 11–50.

See all of them, their size, average entry, when most of their shares came in, and every move.

Past performance is not indicative of future results.

Rules Polymarket's rules · the same for all 3 options

The second round of the presidential election is scheduled to take place in Brazil on October 25, 2026. This market will resolve according to the margin of victory between the top two candidates in the second round of the next Brazil Presidential Election. For the purpose of this market, the “margin of victory” is defined as the absolute difference between the percentages of valid votes received by the first- and second-place candidates. Percentages of the valid votes received by each candidate will be determined by dividing the total number of valid votes each of the top two candidates receives by the sum of all valid votes cast in the election. If the reported value falls exactly between two brackets, then this market will resolve to the higher range bracket. If a candidate other than Flávio Bolsonaro or Luiz Inácio Lula da Silva receives the most valid votes in the second round, or if the top two candidates receive exactly the same number of valid votes, this market will resolve to "Other". This market will resolve based on the official vote count once the vote count has been made official. If a recount is initiated before the vote total has been made official, the market will remain open until the recount is completed and the vote is made official. If the result of this election isn't known definitively 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., https://dadosabertos.tse.jus.br/).Show rulesHide rules
Resolution criteria
The second round of the presidential election is scheduled to take place in Brazil on October 25, 2026. This market will resolve according to the margin of victory between the top two candidates in the second round of the next Brazil Presidential Election. For the purpose of this market, the “margin of victory” is defined as the absolute difference between the percentages of valid votes received by the first- and second-place candidates. Percentages of the valid votes received by each candidate will be determined by dividing the total number of valid votes each of the top two candidates receives by the sum of all valid votes cast in the election. If the reported value falls exactly between two brackets, then this market will resolve to the higher range bracket. If a candidate other than Flávio Bolsonaro or Luiz Inácio Lula da Silva receives the most valid votes in the second round, or if the top two candidates receive exactly the same number of valid votes, this market will resolve to "Other". This market will resolve based on the official vote count once the vote count has been made official. If a recount is initiated before the vote total has been made official, the market will remain open until the recount is completed and the vote is made official. If the result of this election isn't known definitively 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., https://dadosabertos.tse.jus.br/).
How markets resolve
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Flávio Bolsonaro 8-10% · Buy YesOption 2 of 3

Polymarket price · live

Yes5¢
No100¢

Mid: The midpoint between the best price to buy and the best price to sell. When the spread is 10¢ or less, this is the chance the page shows. 3¢ · Spread: The gap between the best price to buy and the best price to sell. A wide spread means few orders near the price. 4¢

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Before you decide · Flávio Bolsonaro 8-10%

  • News36 today · latest 2h
  • AI analysts3% · level
  • Tiers 1–2none of the top 50
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