Renan Santos leads the market for third place in Brazil’s October 4 first-round presidential vote because recent polling averages place the Missão party candidate narrowly ahead of other right-wing contenders at 4-5 percent, reflecting his appeal to younger, anti-establishment voters as a pro-market alternative critical of both Lula and the Bolsonaro family. Ronaldo Caiado sits close behind at 37.5 percent implied probability after formally launching his PSD bid in late July with a platform emphasizing public security and agribusiness ties, though his support remains in the low single digits. Romeu Zema and lower-polling figures trail further back, as the right-wing vote fragments among multiple candidates while Lula and Flávio Bolsonaro consolidate the top two spots in surveys. Trader consensus tracks these narrow polling differentials and the absence of major late shifts that would reorder the field.