Stamped snapshot

The winner of the 2026 Brazilian presidential election

This snapshot shows a condensed version of Mantic's analysis — the full breakdown is available in the Mantic app. The live forecast may have changed.

Flávio Bolsonaro

80.8%

As of 5 Oct 2026, 09:07 UTC

Outcome probabilities

Flávio Bolsonaro80.8%
Luiz Inácio Lula da Silva18.9%
Other0.2%
Tarcísio de Freitas0.0%
Michelle Bolsonaro0.0%
Fernando Haddad0.0%
Jair Bolsonaro0.0%
Carlos Roberto Massa Júnior (Ratinho Júnior)0.0%
Eduardo Bolsonaro0.0%
Renan Santos0.0%

Rationale

Full access

I predict an 81% likelihood that Flávio Bolsonaro will win the 2026 Brazilian presidential election, driven by his first-round lead over Lula, favorable runoff voter-transfer arithmetic, and historical precedent that no first-round leader has ever lost in Brazilian history.

Forecast record

Question context

A presidential election is scheduled to take place in Brazil on October 4, 2026.

This market will resolve according to the listed candidate that wins this election.

This market includes any potential second round. If the result of this election isn't 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., https://dadosabertos.tse.jus.br/).

Resolution criteria

A presidential election is scheduled to take place in Brazil on October 4, 2026.

This market will resolve according to the listed candidate that wins this election.

This market includes any potential second round. If the result of this election isn't 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., https://dadosabertos.tse.jus.br/).

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Who will win the 2026 Brazilian presidential election? | Mantic