As Brazilians prepare to vote on Sunday, supporters of President Jair Bolsonaro continue to sow doubts about the country's electronic voting system.
Bolsonaro's opponents say it is a tactic to challenge the results if he loses.
Recent polls suggest that seven of 10 Brazilians still believe in the electronic voting system, which was first used in 1996, but analysts say the controversy is dangerous for Brazil's democracy.
Al Jazeera's Monica Yanakiew reports from Rio de Janeiro, Brazil.

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