Final count
| Candidate | Party | Votes | Share | Seats |
| MAURO MENDES | UNIÃO | 1,187,352 | 33.2% | 1 |
| ZÉ MEDEIROS | PL | 977,777 | 27.4% | 1 |
| JANAINA RIVA | MDB | 519,434 | 14.5% | |
| FÁVARO | PSD | 411,020 | 11.5% | |
| PEDRO TAQUES | PSB | 224,621 | 6.3% | |
| GALVAN | AVANTE | 169,265 | 4.7% | |
| MARGARETH BUZETTI | PP | 65,559 | 1.8% | |
| CORONEL DARWIN | DEMOCRATA | 12,819 | 0.4% | |
| PROFESSOR NELSON FERREIRA | AGIR | 5,563 | 0.2% | |
| BENY GODOY | AGIR | 1,854 | 0.1% | |
| Total votes | 3,575,264 | | 2 |
TSE EA20 result file, round 1, generated 4 Oct 2026 21:32:09 Brasília time: final totalisation ('tf': 's', 'and': 'f'), 8,287 of 8,287 polling sections totalised on 4 Oct 2026 at 20:31:48 (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) 3,575,264, of 4,099,436 votes cast by 2,049,718 voters (attendance, 'c') out of 2,634,992 registered ('te'); blank 233,512, null 290,660. 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'): MAURO MENDES (UNIÃO) and ZÉ MEDEIROS (PL), 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 MT (senator, cargo 5, election 6259) shows the final totalisation ('tf': 's', 'and': 'f', all 8,287 polling sections) on 4 Oct 2026 at 20:31:48 Brasília time, recorded as 2026-10-04T23:31:48Z. Published by Tribunal Superior Eleitoral, 5 Oct 2026: resultados.tse.jus.br/oficial/ele2026/6259/dados/mt/mt-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.