With Brazil`s first round of its presidential election fast approaching, ​President Jair Bolsonaro, who is running for re-election, has been voicing concerns over the country's electronic voting system. 

Trailing ​his rival, the former president Luiz Inacio Lula da Silva, in all ​polls, there are fears Bolsonaro may refuse to accept defeat, ​much like former US president Donald Trump. ​

So are his complaints about the voting system valid? Lucrecia Franco, in Rio de Janeiro, takes a closer look.

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