Brazilians are getting ready to go to the polls on Sunday to elect their next president.
Incumbent Dilma Rousseff is the clear favourite for a second term in office, but latest opinion polls suggest there may well have to be a runoff vote on October 26.
One survey also shows that pro-business candidate Aecio Neves has leaped into second place and would face Rousseff in the runoff.
Up until now the main challenger to the incumbent has been former environment minister Marina Silva.
The economy and corruption have been among the big talking points in the election campaigning.