Flávio Bolsonaro holds a commanding lead in trader pricing for first place in Rio de Janeiro during the October 25 presidential runoff, driven by his first-round performance in the state where he captured over 53% of valid votes against Lula’s roughly 39%. Recent statewide surveys from Datafolha and Quaest had already shown the PL senator ahead by double digits or in a strong position locally, consistent with the region’s established right-leaning electorate and the Bolsonaro family’s long-standing support base there. Coalition outreach to centrist figures and eliminated candidates is underway to consolidate that edge before voting. A reversal would require unusually large swings in turnout or late developments that overcome the structural margin reflected in both the first-round results and pre-election polling.