Rastislav Trnka, the incumbent Košice Self-Governing Region governor since 2017, holds the strongest position among candidates for the October 24, 2026, election due to consistent polling leads of 43–53 percent and emphasis on regional infrastructure projects and autonomy from national parties. He runs as an independent after final candidate registration in late August. Marián Porvažník, backed by a broad opposition coalition including Progresívne Slovensko and several center-right parties, trails as the main challenger with support in the mid-teens. Igor Šimko, supported by a government-aligned grouping of parties such as Hlas-SD and Smer-SD, registers lower single-digit to low-teen figures. Trnka’s incumbency advantage and local name recognition outweigh ongoing legal proceedings, while the opposition’s split field limits consolidation behind any single alternative ahead of the vote.