Brazil’s Senator Flavio Bolsonaro and President Luiz Inacio Lula da Silva traded barbs in their first face-to-face presidential debate on Sunday in a contentious back-and-forth just one week before the election’s run-off. Polls before the debate suggested Bolsonaro, the son of former far-right president Jair Bolsonaro, would enter the October 25 vote as the favourite after finishing nearly two points ahead of Lula in the election’s first round earlier this month.