Will Flávio Bolsonaro win the first round of the 2026 Brazilian presidential election by 5–10%?

Lula da Silva holds a consistent first-round polling edge of roughly 5–12 points over Flávio Bolsonaro in August 2026 surveys, reflecting the incumbent’s structural advantages as he seeks a fourth term. Recent party conventions formalized Lula’s ticket with Geraldo Alckmin and confirmed Flávio as the Liberal Party nominee backed by his ineligible father, Jair Bolsonaro, though Flávio’s campaign faced setbacks from June audios and a temporary family rift that have limited right-wing consolidation. Lower-polling contenders such as Renan Santos, Ronaldo Caiado, and Romeu Zema remain in single digits and have not narrowed the gap. Trader pricing on narrower Lula margins aligns with these trends and the two-round system’s dynamics ahead of the October 4 vote, where turnout patterns and any late shifts among centrist or independent voters could still influence the final spread.

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