BRASÍLIA, Oct 27 — Brazilian President Luiz Inacio Lula da Silva stunned the world with an election victory that has landed him an unprecedented fourth term in office.

Bets were on right-winger Flavio Bolsonaro to become Brazil’s next president after his shock first-round win earlier this month.

But the leftist incumbent bounced back with an energetic runoff campaign, going on to win 51.8 per cent of the vote.

While the campaign reeled from the first-round defeat, students and young people immediately took to the streets.