Flávio Bolsonaro holds a clear lead in trader pricing for Brazil’s October 4 first-round presidential vote, reflecting consolidation of the right-wing electorate behind Jair Bolsonaro’s eldest son after the former president’s conviction and ineligibility. Recent Datafolha and other surveys show Flávio and incumbent Luiz Inácio Lula da Silva statistically tied in both rounds, with first-round shares near 36-43 percent each and runoff margins within the margin of error. Key drivers include an institutional crisis at the Supreme Federal Court involving ethics allegations against Justice Alexandre de Moraes, rising voter concern over corruption, and Lula’s announcement of a 15 percent Bolsa Família increase. Minor candidates such as Augusto Cury and Ronaldo Caiado remain in low single digits, underscoring the two-way polarization. Late shifts in turnout or undecided voters could still narrow the gap before election day.