In a closely watched presidential election, incumbent President Luiz Inacio Lula da Silva is facing off against right-wing Senator Flavio Bolsonaro, son of former president Jair Bolsonaro, in a tight race.[7843910][7815699] Early results show Flavio Bolsonaro in the lead, but polls close in Brazil on Sunday, with nearly 160 million voters set to cast their votes.[7875881][7863820] The election is a closely contested one, with Lula seeking a fourth term in office and facing off against a candidate from the far-right populist camp.[7867366][7862172] The winner will need more than 50% of the vote to avoid a second round, with a runoff likely on October 25 if no candidate reaches the majority threshold.[7862172][7875473]