Brazil's wildly unpredictable presidential election is becoming even more uncertain as some of the candidates threaten to reject the result.
Both the left and right of Brazil's political spectrum are already questioning the legitimacy of October's vote. While the Workers' Party insists that any election without the jailed former president Luiz Inacio Lula da Silva would be a fraud, ex-Army captain Jair Bolsonaro has questioned the reliability of the country's electronic voting system.
Lula and Bolsonaro are the top two-placed candidates in the election campaign, according to the latest opinion polls, meaning that the validity of the result is not just a fringe issue. President Michel Temer, who rose to power following the impeachment of his predecessor, faced questions over his democratic legitimacy throughout his tenure, undermining his policy agenda. If the next president fails to secure an uncontested mandate, he or she may struggle to secure congressional support to deal with the country's most pressing issues.
