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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 1h ago

Polymarket chance · top 3 of 3 options

Lula da Silva 2-4% 3%Flávio Bolsonaro 8-10% 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%+1.9 pts5%none

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

1AI analysts

1 AI analyst · each gives every option a chance · updated 1h 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 · Lula da Silva 2-4%

5%

2 pts above 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

  • 1h
    Lula, Bolsonaro Neck-And-Neck As Brazil Votes Today: What The Final Polls Show
    NDTV Profit
  • 2h
    More Lula, or Back to the Bolsonaros? Brazil Votes in Cliffhanger
    Jakarta Globe
  • 2h
    Lula's comeback bid vs Bolsonaro's son: Brazil votes in high-stakes run-off
    The Times of India
  • 3h
    Brazil's Runoff in Numbers: Tied Polls, Record Abstention and a Lula-Bolsonaro Rematch
    Around Prague
  • 5h
    Bolsonaro, Lula about even in polls for Brazil runoff vote
    Reuters
  • 5h
    Brazil's Lula, Bolsonaro close arguments to voters ahead of nail-biting election runoff
    ABC News - Breaking News, Latest News and Videos
  • 5h
    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
  • 6h
    On eve of Brazilian presidential runoff, polls put Bolsonaro narrowly ahead of Lula
    Anadolu Ajansı
  • 6h
    Who are the candidates in Brazil's presidential election?
    BBC
  • 6h
    Lula, Bolsonaro rally supporters on final day before Brazil presidential runoff
    The State
  • 7h
    Brazilian bishops release letter opposing Trump-backed candidate Flávio Bolsonaro
    National Catholic Reporter
  • 10h
    Lula and Flávio Bolsonaro face off over competing visions of Brazil’s future
    Latin America Reports
  • 10h
    More than one million Lula supporters rally on eve of Brazilian election runoff
    The Guardian
  • 10h
    Left and Right face off in Brazil's second round presidential election
    Euronews.com
  • 12h
    Brazil presidential odds and predictions: Bolsonaro maintains lead as runoff approaches
    Kalshi News
  • 14h
    Do abstaining voters hold the key to Brazil’s 2026 presidential election?
    Al Jazeera
  • 14h
    The heir of Jair: Flavio Bolsonaro battles to claim Brazil’s throne from Lula in razor-tight election
    The Independent
  • 18h
    What to know as Brazilians choose between Lula and Flávio Bolsonaro on Sunday
    AP News
  • 18h
    Brazil’s Lula and Bolsonaro debate policy proposals before run-off
    Al Jazeera
  • 19h
    Could Lula Be on the Brink of Defeat in Brazil’s Election?
    The New York Times
  • 21h
    ‘We can’t let the far right take power again’: Lula voters in final push before Brazil runoff
    The Guardian
  • 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
    The New York Times. . Flávio Bolsonaro, the right-wing presidential candidate in Brazil, recently outperformed polls, ahead of the leftist President Luiz Inácio Lula da Silva, prompting a runoff on Sunday. A visit to Nanuque, a small town with big agricultural busi
    Facebook
  • 1d
    Lula, Bolsonaro lock horns in final debate before Brazil vote
    AFP.com
  • 1d
    Environmental officials fear new wave of harassment if Flavio Bolsonaro wins in Brazil
    news - Mongabay
  • 1d
    What if Flávio Bolsonaro wins? High stakes for the environment in Brazil’s 2026 elections (commentary)
    news - Mongabay
  • 1d
    Brazil Holds Runoff Sunday Between Flávio Bolsonaro and Luiz Inácio Lula da Silva: how 14 outlets framed it
    NewsCord
  • 1d
    Brazil presidential election dogged by alleged bias by Meta AI tools
    New Scientist
  • 1d
    Brazil's tense presidential run-off campaign feels like a psychological thriller
    France 24
  • 1d
    Lula has defined Brazil’s left for decades. Can his movement survive another Bolsonaro?
    CNN
  • 1d
    Brazil's runoff: Lula's legacy vs. Bolsonaro's dynasty
    NPR
  • 2d
    Lula, Bolsonaro strike calmer tone in final Brazil election debate
    France 24
  • 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
    Spooked by Bolsonaro, Brazil’s left takes to social media and the streets pushing for Lula win
    AP News
  • 2d
    Brazil Runoff Election: Could Flávio Bolsonaro Deliver on His Fiscal Promises?
    Council on Foreign Relations
  • 2d
    One Big Question: What's Changed in Brazil's Presidential Race ahead of the Runoff?
    AS/COA
  • 2d
    Brazil’s Bolsonaro challenges Lula to expand release of personal records
    Al Jazeera
  • 3d
    Brazil's Bolsonaro sets terms for records release after Lula's disclosure challenge
    Tacoma News Tribune
  • 3d
    For Flavio Bolsonaro, runoff vote tests Brazilians' appetite for family's political brand
    Reuters
  • 3d
    Making Sense of Brazil’s Presidential Election
    American University
  • 3d
    Bolsonaro's lead over Lula narrows ahead Brazil runoff, Quaest poll shows
    Reuters
  • 4d
    Brazil’s presidential candidates push to have one another disqualified ahead of run-off
    France 24
  • 4d
    Meta tells Brazil court it treats Lula and Bolsonaro campaigns equally
    Reuters
  • 4d
    Brazil's Lula challenges Flavio Bolsonaro to make financial records public ahead of election
    Reuters
  • 4d
    With selfies and squats, Brazil's Lula fights for one last comeback
    Buenos Aires Times
  • 4d
    As Brazilians prepare to vote for president, Lula and Flavio Bolsonaro tied in polls
    DW.com
  • 5d
    Brazil court orders Meta to prove it gives Lula, Bolsonaro campaign content equal treatment
    France 24
  • 5d
    Brazil: Lula, Bolsonaro clash in heated presidential debate
    DW.com
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 · updated 1h ago
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/).
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Lula da Silva 2-4% · Buy YesOption 3 of 3

Polymarket price · live

Yes5¢
No98¢

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. 3¢

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Before you decide · Lula da Silva 2-4%

  • News22 today · latest 1h
  • AI analysts5% · 2 pts above
  • Tiers 1–2none of the top 50
Paper trading · play money

Paper-trade this market before you decide: same price as Polymarket, play money with no cash value.