Datafolha’s latest snapshot of Brazil’s 2026 presidential contest gives Lula a narrow lead over Flávio Bolsonaro, though the two perspectives presented in coverage place different weight on what that lead means.

The left-leaning account centers on the valid-vote first-round tally, which excludes blank, invalid and undecided responses. It reports Lula at 45% and Flávio Bolsonaro at 40%, describing Lula as “in the lead” in the first round.¹ In that framing, the five-point gap is the survey’s defining result, even as several other candidates register low single-digit support.

The right-leaning account reports the same valid-vote figures but foregrounds a possible runoff, where Lula receives 48% to Bolsonaro’s 45%. It characterizes that outcome as a “technical tie,” since the poll’s margin of error is two percentage points in either direction.² The report also distinguishes between prompted and unprompted first-round questions: in the unprompted scenario, 13% of respondents were undecided, compared with 2% in the prompted total-vote scenario.

Both accounts therefore point to the same central tension: Lula is ahead in the first-round valid-vote measure, but a direct contest between the two would be considerably closer. The right-leaning report adds a broader caution that voting-intention polls are a reading of a particular moment rather than a prediction of the eventual result.²

Datafolha interviewed 2,506 people from September 28 to October 1. The survey, commissioned by Folha de S.Paulo and Grupo Globo, has a 95% confidence level and was registered with Brazil’s electoral court under BR-08039/2026.²