Final count
| Candidate | Party | Votes | Share | Seats |
| GUSTAVO GAYER | PL | 1,639,247 | 24.5% | 1 |
| GRACINHA CAIADO | UNIÃO | 1,458,522 | 21.8% | 1 |
| DR. ZACHARIAS CALIL | MDB | 998,319 | 14.9% | |
| OSÉIAS VARÃO | PL | 676,930 | 10.1% | |
| VANDERLAN CARDOSO | PSD | 633,843 | 9.5% | |
| GUSTAVO MENDANHA | PRD | 578,418 | 8.7% | |
| ISAURA LEMOS | PSB | 348,290 | 5.2% | |
| CINTIA DIAS | PSOL | 288,637 | 4.3% | |
| ERNESTO ROLLER | PSDB | 28,927 | 0.4% | |
| IURE CASTRO | CIDADANIA | 23,714 | 0.3% | |
| GUILHERME DARQUES | UP | 7,147 | 0.1% | |
| Total votes | 6,681,994 | | 2 |
TSE EA20 result file, round 1, generated 4 Oct 2026 22:39:20 Brasília time: final totalisation ('tf': 's', 'and': 'f'), 15,686 of 15,686 polling sections totalised on 4 Oct 2026 at 22:38:24 (Brasília time, UTC-3). Rows: each candidate's ballot name and party as the TSE writes them, with nominal votes. Two seats, two votes per voter. totalVotes = valid votes ('vv', nominal) 6,681,994, of 7,932,976 votes cast by 3,966,488 voters (attendance, 'c') out of 5,074,870 registered ('te'); blank 591,005, null 659,977. ballots and electorate are left out because with two votes per voter the valid votes exceed both (the record counts one vote per voter). Elected (status 'Eleito'): GUSTAVO GAYER (PL) and GRACINHA CAIADO (UNIÃO), seats 1 each; winner marks the most-voted only (the field means 'most votes'). Diplomação (by 18 Dec 2026) is a later formality and does not change the count. Observed: the TSE result file for GO (senator, cargo 5, election 6259) shows the final totalisation ('tf': 's', 'and': 'f', all 15,686 polling sections) on 4 Oct 2026 at 22:38:24 Brasília time, recorded as 2026-10-05T01:38:24Z. Published by Tribunal Superior Eleitoral, 5 Oct 2026: resultados.tse.jus.br/oficial/ele2026/6259/dados/go/go-c0005-e006259-u.json. Official publication of the TSE; no reuse terms stated. Lei 9.610/1998 art. 8 IV (planalto.gov.br/ccivil_03/leis/l9610.htm, read 25 Oct 2026): "Não são objeto de proteção como direitos autorais [...] os textos de tratados ou convenções, leis, decretos, regulamentos, decisões judiciais e demais atos oficiais".
The authority's own page is the primary source for this result; this page is a copy of it.