Protesters in cities across the country have steadfastly refused to do the same, particularly with Bolsonaro declining to concede.
Neither explained how that might have affected election results, but said they were asking the electoral authority to invalidate all votes cast on those machines.
The complaint characterized the bug as “irreparable non-compliance due to malfunction” that called into question the authenticity of the results.
Immediately afterward, the head of the electoral authority issued a ruling that implicitly raised the possibility that Bolsonaro's own party could suffer from such a challenge.
The bug hadn't been known previously, yet experts said it also doesn't affect results.
Bolsonaro spent more than a year claiming Brazil’s electronic voting system is prone to fraud, without ever presenting evidence.
The Senate's president, Rodrigo Pacheco, said Tuesday afternoon that the election results are “unquestionable.”. »