Well he wasn't elected yet, but the reason his conviction was thrown out by the Supreme Court and the reason the United Nations stepped in to call the case out as bogus was because investigative journalists from The Intercept got ahold of leaked Telegram messages proving Bolsonaro made a deal with the corrupt judge Sérgio Moro.

The case is the reason Lula was barred from running against Bolsonaro. After Bolsonaro won, he appointed Moro as the Minister of Justice and Public Security as a political reward.

The case has been thoroughly disproven as bogus by journalists and even the United Nations. It's genuinely depressing how many people still believe in it