Lula wins fourth term as Bolsonaro's challenge clouds Brazil's transition

Brazil's leftist President Luiz Inacio Lula da Silva won a historic fourth term in Sunday's election, but right-wing Senator Flavio Bolsonaro refused to concede, questioning the results and threatening to annul the vote. Bolsonaro cited a Supreme Court justice's decision to extend voting by two hours over alleged irregularities, though analysts say his challenge is unlikely to succeed given Lula's over 4 million vote margin. His refusal could spark protests, straining Brazil's electoral system and judicial independence. Lula's victory defied polls and global anti-incumbent sentiment, disappointing the Trump administration and rattling financial markets. He faces a Congress packed with Bolsonaro allies, presenting countless challenges for his new term.