The survey, contracted by Globo, was carried out between September 29 and October 1 and interviewed 3,008 voters in person in 183 cities. The survey is registered with the Superior Electoral Court (TSE) under number BR-00999/2022. The margin of error is plus or minus two percentage points, with a confidence level of 95%.

https://www.estadao.com.br/politica/pesquisa-presidente-lula-bolsonaro-votos-validos-ipec-vespera/

you can never be too sure of course.

_{(I had a Dumb Rodent Moment™, ignore this)}