Eduardo Paes (PSD) holds a clear polling lead in the October 2026 Rio de Janeiro gubernatorial race following Cláudio Castro’s resignation and the interim governorship of Ricardo Couto, yet trader prices remain fragmented across a wide field. Multiple declared and speculated candidates—including Wilson Witzel, Tarcísio Motta, Lindbergh Farias, Eduardo Pazuello, and others—trade in a narrow 10–23% band because no single alternative has consolidated opposition support. Early timing leaves room for party negotiations, coalition realignments ahead of the first-round ballot, and shifts in voter priorities on public security and state finances. A potential runoff and historically volatile Rio electorate further sustain uncertainty, keeping implied probabilities closely matched until clearer signals emerge from official candidacies and later surveys.