The government is expected to win support for keeping hold of powers until October.
The president has also repeatedly spread misinformation seeking to delegitimise mail-in voting.
Authoritarianism experts worry that Trump could abuse his powers to try to disrupt the November election or delegitimise the result if he loses.
Digital technologies for tracking people and monitoring outbreaks may be the only way out of the crisis — but misuse could aid a slide into authoritarianism.
"Brazil's Trump" is a far-right congressman who praises dictators. He's also a lesson in how modern democracies can crumble.