World May 16, 2026 01:10 PM

Datafolha Poll Finds Lula and Senator Flavio Bolsonaro Neck-and-Neck in Hypothetical October Runoff

Latest survey shows a 45%-45% tie in a second-round contest and places both candidates near the lead in first-round preferences

By Jordan Park
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A recent Datafolha poll indicates a dead heat between President Luiz Inacio Lula da Silva and Senator Flavio Bolsonaro in a hypothetical October runoff, with both candidates receiving 45% support. The same poll places Lula at 38% and Flavio at 35% in a projected first round. Most interviews occurred before reporting that alleged a financial arrangement between Flavio and former banker Daniel Vorcaro.

Datafolha Poll Finds Lula and Senator Flavio Bolsonaro Neck-and-Neck in Hypothetical October Runoff
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Key Points

  • Datafolha poll finds a tie in a hypothetical second-round race between Luiz Inacio Lula da Silva and Senator Flavio Bolsonaro, each at 45%.
  • In first-round projections from the same poll of 2,004 voters, Lula leads with 38% while Flavio is at 35%.
  • Most interviews for the poll took place before an investigative report alleging financial negotiations between Flavio Bolsonaro and former banker Daniel Vorcaro; Vorcaro is imprisoned amid an investigation linked to Banco Master's collapse.

SAO PAULO, May 16 - A fresh Datafolha survey released on Saturday shows that a head-to-head second-round contest between incumbent President Luiz Inacio Lula da Silva and Senator Flavio Bolsonaro would be tied, with each candidate polling 45% of voter intentions.

The poll also details first-round preferences, where Lula would lead with 38% and Flavio would take second place with 35% of the vote, according to responses gathered from 2,004 voters.

Datafolha's new figures confirm continuity with the April survey in which Lula was reported at 45% and Flavio at 46% in a hypothetical runoff; that earlier result was described as a statistical tie because the poll’s margin of error is roughly two percentage points.

Survey organizers noted that the bulk of interviews for the current poll were conducted prior to publication of an investigative piece by Intercept Brasil that outlined questions about the senator’s dealings with former banker Daniel Vorcaro.

The reporting cited in that story alleges Flavio negotiated the receipt of 134 million reais to be provided by Vorcaro, who formerly owned Banco Master, purportedly to fund a film about the life of Flavio’s father, former President Jair Bolsonaro. Vorcaro is currently detained while authorities investigate a scandal tied to the collapse of Banco Master.

Flavio Bolsonaro has rejected any allegation of wrongdoing in connection with his relationship with Vorcaro. The article also reports that Vorcaro’s defense team declined to comment on the Intercept Brasil account.

For reference, the poll includes an exchange-rate note: 1 US dollar equals 5.06 Brazilian reais.


Context and interpretation

The Datafolha numbers show a tightly contested presidential landscape in the event of an October runoff between Lula and Flavio Bolsonaro. The first-round standings and the narrow margin in the prior poll underscore the persistence of uncertainty among voters. The timing of when interviews were conducted relative to the reporting on the alleged financial arrangement is a relevant procedural detail that could affect future measurements of voter sentiment.

Risks

  • Margin of error - The poll’s approximate two percentage point margin of error means small differences in reported percentages constitute a statistical tie, creating uncertainty for forecasts; this affects political strategists and markets sensitive to electoral outcomes.
  • Timing of interviews - A majority of interviews were completed before publication of allegations concerning Flavio’s relationship with Daniel Vorcaro, so subsequent developments could shift voter preferences; this bears on political risk assessments and sentiment-driven financial instruments.
  • Allegations under investigation - The reported negotiation of 134 million reais and Vorcaro’s imprisonment amid an inquiry into Banco Master introduce legal and reputational uncertainty for the candidate and may influence public and investor perceptions of the banking and media sectors.

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