Augusto Cury and Renan Santos lead trader pricing for third place in Brazil’s October 4 first-round presidential vote because recent national polls place both in the low-to-mid single digits behind Lula and Flávio Bolsonaro, with Cury showing sharper gains after late-August television appearances and social-media expansion that broadened his support among younger and educated voters seeking alternatives to polarization. Santos, drawing from his MBL background and anti-establishment messaging that targets both major camps, maintains competitive positioning but trails Cury in most September surveys. Ronaldo Caiado and lower-polling names such as Romeu Zema register minimal implied probabilities as their support remains fragmented and static. Final debates and late campaign shifts among undecided voters could still alter the ordering before ballots close.