Flavio Bolsonaro maintains a commanding lead in Rio de Janeiro polling for the October 25 presidential runoff, with recent Datafolha and Prefab surveys showing him at 51% to Lula's 42% or better in valid votes. His position stems from consistent first-round strength in the state where he serves as senator, combined with endorsements from eliminated candidates including Ronaldo Caiado and Augusto Cury plus partial MDB backing. These factors have consolidated right-leaning support ahead of the national contest. Trader consensus reflects limited realistic paths for Lula to overtake him locally, though shifts in turnout among undecided voters, late campaign events, or unexpected national developments could still alter the outcome before election day.