DataTrends — President - Runoff — 11 Oct 2026 (valid votes)

Published valid-vote shares: Flávio Bolsonaro 53.1%, Luiz Inácio Lula da Silva 46.9%. These are not all-respondent percentages. Stimulated total-response shares: Bolsonaro 50%, Lula 44%, blank/null 5%, undecided/nonresponse 1%. Nationwide survey of 2,000 Brazilian voters, fieldwork 7–9 October 2026, published 11 October. IVR automated telephone interviews. Reported margin of error ±2.19 percentage points at 95% confidence. TSE registration BR-03576/2026.