Flávio Bolsonaro’s commanding position in Rio de Janeiro city reflects his established base as a senator from the state, strong conservative and evangelical support in the Southeast, and a solid first-round performance there ahead of the October 25 runoff against President Lula. Recent state-level polling shows him leading by double digits in valid votes, consistent with broader right-wing gains in Rio’s gubernatorial race and the consolidation of non-Lula votes after the October 4 first round. Traders price this local outcome as highly likely given the city’s electoral profile and limited time for shifts before voting. Late developments such as turnout surges among Lula-leaning voters or unexpected campaign events could still alter the result, though current evidence points to structural advantages for the Liberal Party candidate in this specific electorate.