Recent polling from Quaest and Datafolha shows a technical four-way tie among leading contenders for Minas Gerais' two Senate seats, with Marília Campos (PT) at 13%, Aécio Neves (PSDB) and Carlos Viana (PSD) at 11% each, and Domingos Sávio (PL) at 9%, amid 21% undecided and 14% blank/null votes. This fragmentation sustains tight probabilities for second place, as voters select two names and the field remains open with no dominant second-choice consolidation. Aécio's late confirmation of his candidacy in late August contributed to his rise into the pack, while Viana and Sávio have gained modestly in second-preference testing. High indecision and the multi-candidate structure limit separation ahead of the October first round, though further shifts in voter pairing or turnout among core partisan blocs could reorder the middle positions.