In a closely watched election, Brazilian President Luiz Inácio Lula da Silva defeated right-wing and Trump-aligned challenger Flávio Bolsonaro. Transport and weather disruptions in parts of Brazil led to a chaotic final stretch at the polls. Bolsonaro is refusing to concede, and President Trump called the outcome "rigged." Stephanie Sy reports.

While prediction market odds pointed to a clear Bolsonaro victory, Lula emerged the winner in a tight race.

Brazil's President Luiz Inácio Lula da Silva, a vocal critic of President Trump, was reelected Sunday in a runoff over right-wing opponent Flávio Bolsonaro, who is refusing to concede defeat.

Bolsonaro quickly refused to concede defeat and asked for the election results to be annulled after an evening of chaos at some polling places that followed a last-minute decision to extend voting by two hours.