Recent polls place the Brazil 2026 runoff between Flávio Bolsonaro and President Lula da Silva in a statistical tie or narrow Flávio lead among valid votes, with most surveys showing splits near 50-52% to 48-50% just two days before the October 25 vote. First-round results established a divided electorate, with Flávio ahead in the South, Southeast, and Center-West while Lula dominated the Northeast, and endorsements from eliminated conservative candidates have not produced decisive shifts. High abstention, blank ballots, and low undecided shares limit room for large swings, while the final debate, turnout efforts, and any last-minute court rulings remain the main variables that could determine whether the margin stays under 4 points or widens modestly. This environment sustains trader focus on the tightest victory ranges.