Lula has 45% of valid votes in the 1st round, says Datafolha
In the calculation, white, null, and undecided votes are excluded

TL;DR
- Lula (PT) leads with 45% of valid votes in the first round.
- Flávio Bolsonaro (PL) is second with 40% of valid votes.
- The survey excluded blank, null, and undecided votes.
- 2,506 voters were interviewed between September 28 and October 1.
- The margin of error for the poll is two percentage points.