Alexandre Guimarães secured the second Senate seat in Tocantins through strong performance in the October 4, 2026 election, finishing with roughly 19% of valid votes behind Eduardo Gomes. His campaign leveraged prior federal deputy experience, regional alliances, and emphasis on infrastructure and municipal support, consolidating second-choice votes in a system allowing two selections per ballot. Trailing candidates such as Eli Borges and Gaguim fell short by several percentage points, with no recounts or disputes reported in official tallies from the Tribunal Superior Eleitoral. This outcome aligns with pre-election polling trends showing Guimarães competitive for the second vacancy. Late shifts in voter preferences or legal challenges to results remain the primary variables that could still affect final certification.