Lula da Silva, the incumbent Workers’ Party president seeking a fourth term, leads first-round polling ahead of the October 4 vote, positioning Senator Flávio Bolsonaro of the Liberal Party as the clear runner-up in trader consensus. Flávio carries the far-right legacy of his imprisoned father, Jair Bolsonaro, who remains ineligible, and has consolidated opposition support through party nomination and family networks while other right-leaning figures such as Ronaldo Caiado, Romeu Zema, and Renan Santos register single-digit shares. Recent July polls from Quaest and Nexus show Lula ahead or statistically tied in runoff simulations, with Flávio narrowing gaps amid independent-voter gains and external factors including U.S. diplomatic meetings and tariff threats; Lula’s government actions on debt relief and fuel subsidies further bolster his position. Low probabilities for remaining contenders reflect limited momentum and the binary nature of the contest two months before voting.