Recent polling from late 2025 through mid-2026 shows incumbents Zenaide Maia and Styvenson Valentim holding early leads for the two open Rio Grande do Norte Senate seats, yet the contest for second place remains fragmented among a wide field that includes Rafael Motta (PDT), Clóvis Costa, Gari Wendell Batista, Professor Guilherme, and several others clustered in the low-to-mid 20% range. Coalition dynamics, with Motta backed by a center-left alliance including PDT, PT, and PSB, and competing slates from PL and PSD figures, have prevented any single challenger from consolidating support. Voter surveys indicate modest movement in the past few months but no decisive breakout, leaving traders pricing a tight race where small shifts in turnout among key regions or late endorsements could reorder the finish. The October 4 election date and ongoing campaign events continue to anchor market expectations.