Datafolha releases electoral survey with a margin of error of 2 percentage points
Quick Look
- The calculation of valid votes follows the way in which the Electoral Court publishes official election results, without considering blank and invalid votes and abstentions.
- Datafolha, commissioned by Globo and the newspaper Folha de S.Paulo, interviewed 2,506 people aged 16 or over between September 29th and October 1st.
- The margin of error is 2 percentage points, plus or minus, and the confidence level is 95%.
AI-generated summary
Why It Matters
The calculation of valid votes follows the way in which the Electoral Court publishes official election results, without considering blank and invalid votes and abstentions.
The calculation of valid votes follows the way in which the Electoral Court publishes official election results, without considering blank and invalid votes and abstentions.
Datafolha, commissioned by Globo and the newspaper Folha de S.Paulo, interviewed 2,506 people aged 16 or over between September 29th and October 1st. The margin of error is 2 percentage points, plus or minus, and the confidence level is 95%. The TSE registration number is BR-BR-08039/2026.
Open Questions
- What are the voting intention percentages for each candidate or party in the survey?
- What is the sample size by region or age group?
- Have there been any methodological changes in relation to previous Datafolha surveys?






