André do Prado (PL) leads the market for second place in São Paulo’s Senate election at 77%, consistent with the October 4, 2026 results showing him receiving approximately 29.28% of valid votes behind Guilherme Derrite (PP) at 30.59%. Derrite and do Prado, both backed by Governor Tarcísio de Freitas and aligned with conservative coalitions, outperformed earlier polling leaders Simone Tebet (PSB) and Marina Silva (Rede), who finished third and fourth. Late-campaign consolidation of right-leaning voter preferences and lower turnout for center-left options shifted the final order. With two seats allocated to the top vote-getters in a single-round contest, these verified tallies from the Tribunal Superior Eleitoral position do Prado as the clear second-place outcome while leaving minimal room for other candidates to overtake.