Overview
- The Quaest survey, conducted Oct. 2–3 and published Oct. 3, puts Senator Sérgio Moro (PL) in first with 43% of valid votes while Sandro Alex (PSD) and Requião Filho (PDT) register 29% and 27% respectively in a technical tie.
- Second‑round simulations show Moro favored in both matchups but with a narrower lead against Sandro Alex, at 42% for Moro versus 37% for Sandro and 49% versus 34% against Requião Filho.
- The poll interviewed 2,004 voters, was commissioned by RPC and registered at the Justiça Eleitoral under PR-05119/2026, and carries a margin of error of ±2 percentage points at the 95% confidence level.
- Compared with the previous survey, Sandro Alex rose from 20% to 25% in total votes and Requião climbed from 20% to 23%, while blank and null votes fell to 4% and undecided voters remain at about 9%, leaving room for late movement that could decide the runoff lineup.
- Incumbent governor Ratinho Jr. publicly denied backing Moro and reaffirmed his support for Sandro Alex in a video on X, a late endorsement that may influence undecided voters and campaign strategies in the final hours before the first round.