Leftist former President Luiz Inácio Lula da Silva won Brazil's presidential runoff Sunday, beating right-wing President Jair Bolsonaro with 50.90% of the vote, according to the country's election authority.
Why it matters: The results mark a stunning political comeback for Lula, who was sidelined during the last presidential election because of corruption convictions. But his victory will likely see an aggressive challenge by Bolsonaro, who has for months claimed without evidence that Brazil's electronic voting system can be manipulated.
