
Datafolha and Quaest surveys detail methodologies and schedules registered with the TSE
The article details the schedule for publishing electoral polls for the 2nd presidential round, including records at the TSE, methodologies and sampling from the Datafolha and Quaest institutes, focusing on publication dates between October 22nd and 24th.
AI-generated summary
Electoral polls monitor the presidential dispute in the 2nd round, with mandatory registrations at the Superior Electoral Court (TSE).
In the previous survey, released last week, Flávio Bolsonaro (PL) and President Lula (PT) were in a technical tie. Flávio had 46%, and Lula, 44%. The difference of two points was within the margin of error, hence the technical draw.
📋According to data registered with the Superior Electoral Court (TSE), 2,154 people aged 16 or over will be interviewed, between the 17th and 20th of October. The margin of error is two percentage points, plus or minus, and the confidence level is 95%. The research is registered as BR-08535/2026.
The next Datafolha survey on the presidential dispute will be released on Thursday (22). The research was commissioned by Globo and Folha de S.Paulo.
📋The new Datafolha survey foresees interviews with 2,520 people aged 16 or over, between the 13th and 15th of October. The margin of error is two percentage points, plus or minus, and the confidence level is 95%. Registration with the TSE is BR-09709/2026.
On Saturday (24), the day before the 2nd round, Quaest and Datafolha will release the latest voting intention surveys. The surveys were commissioned, respectively, by the newspaper O Globo and Globo; and by Folha de S. Paulo and Globo.
📋Quaest's latest survey will interview 3,702 people on October 23rd and 24th. The margin of error is two percentage points, with a 95% confidence level. The research is registered with the TSE as BR-09158/2026. In the same period, Datafolha will interview 4,050 people, with the same margin of error and level of confidence. Registration with the TSE is BR-09540/2026.
AI outlook — possibilities, not facts
Datafolha research released on October 22nd.
Very likely · Within days
Quaest and Datafolha research released on October 24th.
Very likely · Within days

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