Brazil's presidential race pits Lula against Bolsonaro's son in high-stakes rematch

President Luiz Inácio Lula da Silva is seeking a fourth term as Brazil heads to the polls on October 4, confronting Senator Flávio Bolsonaro, the 45-year-old son of former president Jair Bolsonaro, who is campaigning on a platform that includes a pledge to pardon his father if elected. Jair Bolsonaro is currently serving a 27-year sentence for a coup-plot conviction, and his son has framed the pardon as a central campaign issue.

Flávio Bolsonaro describes himself as a "more moderate Bolsonaro" but has offered few substantive policy departures from his father's positions, including support for broader gun access, skepticism about human responsibility for climate change, and a promise to seek his father's release. Lula, 80, argues his administration has reduced poverty and protected the Amazon, while critics point to past corruption charges that were later annulled.

The election could require a runoff on October 25 if no candidate secures a majority, and the winner will appoint four of the 11 Supreme Court justices, shaping Brazil's judiciary for years. Security, corruption investigations involving high-level officials, and economic concerns such as national debt and growth also dominate voter priorities.

U.S. involvement has become a visible element of the campaign. Flávio Bolsonaro’s rallies have featured American flags, and his brother has appealed to President Donald Trump for support. Lula has resisted U.S. pressure on judicial matters and criticized American policy toward Venezuela, while also negotiating tariff reductions.

"If Lula wins the election by a close margin, then almost for sure we would have some Bolsonaro supporters questioning the results," said Yuri Sanches, head of political analysis at AtlasIntel.

Analysts warn that a narrow victory for either side could trigger challenges to the result, testing Brazil's democratic institutions that have withstood a recent coup-plot conviction. As the largest economy in Latin America and a member of both the G20 and BRICS, Brazil's leadership will have significant implications for regional politics, climate policy and the balance of influence between the United States and the Global South.