It was in connection with the 2018 presidential election that a debate about disinformation flared up.
It was said that Brazil has become a "hotspot" for fake news.
90 percent of young voters now say they are worried that disinformation campaigns and fake news could influence the outcome of the upcoming election.
- Fake news feels really dangerous given this hateful climate, says first-time voter Maria Esther de Castro to SVT's reporter Tigran Feiler on location in Brazil.
Historic choice
In Brazil, you can vote from the age of 16.
Two million young people between the ages of 16 and 18 have registered to vote in Sunday's election, which is almost 50 percent more than in 2018.
Sunday's election has been described as one of the heaviest in the country's history.
It is between two politicians who have dominated Brazil in recent years: the socialist and former president Lula da Silva and the talked about, current president Jair Bolsonaro.