Flávio Bolsonaro secured backing from two former rivals as Brazil’s presidential campaign entered its second round, strengthening his challenge to President Luiz Inácio Lula da Silva. The endorsements followed Sunday’s closely contested vote, which left neither candidate with a majority and set up a decisive run-off on 25 October.
A narrow first-round lead
Bolsonaro received 47.03% of valid votes, compared with Lula’s 45.16%, according to results published by Brazil’s electoral authorities with virtually all ballots counted. The margin of approximately 2.2 million votes leaves both campaigns seeking support beyond their existing political bases.
The senator, a son of former president Jair Bolsonaro, is contesting the presidency for the first time. Lula is seeking a fourth presidential term, having governed between 2003 and 2010 before returning to office in January 2023.
Former rivals back Bolsonaro
Ronaldo Caiado and Romeu Zema announced support for Bolsonaro on Monday. Caiado, a former governor of Goiás, received 2.18% in the first round, while former Minas Gerais governor Zema secured 0.27%. Caiado was scheduled to meet Bolsonaro on Tuesday to formalise his endorsement.
Other candidates have declined to take sides. Augusto Cury and Renan Santos, who together attracted more than 5% of valid votes, said they would endorse neither finalist. Their supporters remain an important audience for both campaigns.
Congress shifts towards the right
Bolsonaro’s Liberal Party also strengthened its parliamentary position, increasing its Senate representation from 15 to 28 seats. Projections showed its lower-house delegation rising from 98 to 121, making it the largest party in both chambers.
The results could help Bolsonaro advance legislation if elected. They would also complicate Lula’s ability to secure congressional support should he win another term, with negotiations over spending and appointments remaining central to governing.
Lula reassesses campaign strategy
Lula’s Workers’ Party is reviewing its messaging, regional turnout and allocation of campaign resources. Party chairman Edinho Silva said the campaign would concentrate on key states and seek broader political support.
More than 33.4 million eligible voters abstained in the first round. Persuading some of them to participate, alongside winning support from eliminated candidates’ voters, could prove decisive in a contest that remains unresolved.
Newshub Editorial in South America – 6 October 2026
Flávio Bolsonaro secured backing from two former rivals as Brazil’s presidential campaign entered its second round, strengthening his challenge to President Luiz Inácio Lula da Silva. The endorsements followed Sunday’s closely contested vote, which left neither candidate with a majority and set up a decisive run-off on 25 October.

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