Brazil goes to the polls on Sunday, October 25, in a presidential runoff between President Luiz Inácio Lula da Silva and Senator Flávio Bolsonaro, an election in which Brasilia's room for maneuver toward Washington is at stake. In the first round on October 4, Bolsonaro led Lula by 2.2 million votes, according to Associated Press.
A Foreign Policy analysis published this October 22 argues that a victory by Senator Bolsonaro opens the door to US military activity on Brazilian soil. The magazine connects that scenario to a doctrinal shift: two days after Bolsonaro was received in the Oval Office, Secretary of State Marco Rubio designated Brazil's main gangs as foreign terrorist organizations, a classification that according to the publication had not previously been applied to drug-trafficking groups with no apparent political agenda. Rubio maintained that the cartels are armed terrorist organizations and not mere traffickers. For Mexico the precedent is direct: the same framework reached the Sinaloa and Jalisco Nueva Generación cartels in 2025, according to the magazine itself.
Associated Press reported on October 19 that 33 million Brazilians, 21% of the electorate, did not vote in the first round, the highest abstention since 1998, and that the debate between the two candidates was held on October 18. On the US side, Foreign Policy counts 239 dead in attacks on vessels in the Caribbean and the eastern Pacific within the campaign it identifies as Operation Southern Spear, and places on January 3 the attack on Venezuela and the transfer of Nicolás Maduro to the United States to face drug-trafficking charges, with some 75 people killed. The publication also mentions the Shield of the Americas alliance, presented in September in New York, and an invitation from Bolsonaro in October 2025 to Defense Secretary Pete Hegseth to spend a few months in Brazil and support that task.
The official result of October 25 and the winner's first decision on the status of those organizations will set the tone of the hemispheric relationship at the start of the new Brazilian government, on January 1, 2027. For the rest of the hemisphere, including Mexico, the data point to watch is one of institutional design: how much of the US anti-drug doctrine is incorporated into a partner's jurisdiction.
This article was written with the assistance of artificial intelligence from verified sources and reviewed by a human editor before publication.