Brazil’s presidential candidates have had their last chance to win over the voters.

A final TV debate has taken place ahead of elections on Sunday, with polls showing incumbent Dilma Rousseff has extended her lead.

She is hoping for a second term but facing stiff opposition from environmentalist Marina Silva.

“We will develop our relations with the European Union, as well as our traditional relations with the US,” said Roussef. “This means Brazil defends multilateral relations and the most diverse agreements.”

Silva said: “It’s clear to us that our society, which won achievements in the home the hard way, now wants a government that can extend those achievements outside as well.”

Two latest opinion polls give Rousseff a lead of at least 15 percentage points. They indicate she would win re-election in a likely second round run-off later this month.

As well as debate about the direction of the economy,allegations of business corruption have also dominated the campaign.