PL leads the Brazil Chamber of Deputies election market at 89% implied probability due to its status as the largest current bloc with 99 seats, aggressive candidate recruitment, and alignment with right-leaning voter trends in a polarized contest. The party benefits from coattails effects tied to Flávio Bolsonaro’s presidential candidacy under the PL banner, as recent June 2026 polls from Quaest, Nexus, and others show a close first-round presidential race between incumbent Luiz Inácio Lula da Silva and Flávio, sustaining momentum for PL legislative candidates. FE Brasil trails at 1.6% amid weaker coalition dynamics for left-leaning groups, while smaller parties such as MISSÃO and UPB register minimal support reflecting limited national reach. The October 4, 2026, vote for all 513 seats remains four months away, with open-list proportional representation and state-level alliances likely to shape final seat totals.