The result is the same as last week, in Datafolha's first poll after the Oct. 2 first-round vote, Reuters reported.
Datafolha interviewed 2,898 people on Oct. 13-14 and the poll had a margin of error of 2 percentage points up or down.
The pollster was one of several polling firms criticized for underestimating support for Bolsonaro in the first round, in which Lula garnered 48% of the votes to Bolsonaro's 43%.