- as the link shows, brazilian political parties are numerous, so general elections typically have multiple candidates. There's no electoral college.
- voting is mandatory in Brazil. In the 2018 presidential elections, there were ~117M voters. By comparison, the last US presidential election saw turnout of 158M voters.
- Brazil has used electronic voting since 1996. General public sentiment towards it has historically always been positive. No instance of fraud has ever been surfaced and the system produces results extremely quickly (as in, within the same day).
- Recently the president has been questioning its security, but for some context on his political platform, he also held a similar stance to Trump on the topic of Covid and has been criticized over his position saying deforestation is good for economy. He's still the favorite candidate. The second most popular candidate (Lula) has a long history of controversy (one of the most high profile being him being implicated in investigations related to the impeachment of the previous president Dilma). As you can imagine, many brazilians are cynical about the country's political system. Take that as you will.