**Capitão Alberto Neto (PL) holds a strong lead in trader pricing for second place in the Amazonas Senate race, reflecting consistent polling where he trails only Eduardo Braga (MDB) in combined vote intentions.** Recent Quaest surveys from late September place Braga at 27% and Neto at 17%, with Plínio Valério (PSDB) at 14% and Wilson Lima (União Brasil) at 13%; similar patterns appear across multiple institutes since mid-2026. Neto benefits from concentrated support in Manaus and endorsement as the primary Bolsonaro-aligned candidate, while Braga draws broader interior strength as the incumbent seeking reelection. The October 4 election, in which voters select two senators, keeps the second seat competitive among these frontrunners, with lower-polling names facing structural barriers to overtaking the established order.