Flávio Bolsonaro enters the October 25 runoff as the clear favorite after securing 47.03% of valid first-round votes on October 4, ahead of incumbent Luiz Inácio Lula da Silva’s 45.16%. This outcome consolidated right-leaning support behind the PL senator and son of the ineligible former president, while other conservative candidates fell short and their voters are expected to migrate in the second round. Recent post-election surveys, including Datafolha and PoderData, show Flávio leading Lula by margins of four to six points on valid votes, reflecting momentum and historical patterns where first-round leaders have strong advantages. Lula’s campaign now faces the challenge of broadening its coalition in a compressed three-week period amid a polarized electorate. Trader consensus prices embed these structural and polling dynamics while acknowledging residual uncertainty around turnout and late shifts.