Quaest shows a tie between Lula and Flávio Bolsonaro on the eve of the 1st round
The PT candidate has 46% of valid votes, against 45% for the senator; Cury, Renan, and Caiado appear with 3% each

TL;DR
- Lula has 46% of valid votes, and Flávio Bolsonaro has 45%.
- The difference is within the 2-point margin of error.
- In a second-round simulation, Flávio Bolsonaro leads Lula 44% to 42%.
- The poll surveyed 3,702 voters on October 2-3.
- The margin of error is 2 percentage points.
- Lula's total votes increased from 39% to 40% in the previous poll.
- Flávio Bolsonaro's total votes increased from 34% to 38%.