Rallies, opinion polls and a final debate - Brazil gets ready for Sunday's knife-edge presidential election

In Brazil's presidential runoff, incumbent Lula and challenger Bolsonaro hold final rallies amid a tight race. Lula seeks a historic fourth term, while Bolsonaro aims to continue his father's right-wing legacy. The election outcome is uncertain, with significant voter abstention in the first round. Lula's past as a union leader contrasts with Bolsonaro's hardline security policies. The election's implications extend to Brazil's role in global climate issues and U.S. relations, with both candidates facing scrutiny over their records and campaign strategies. The runoff will determine Brazil's political alignment in a region shifting towards right-wing governance.