Stickers created by the “Olha o barulhinho” campaign to reach out to teenagers. ‘Pirilili’ is a reference to the sound of the electronic ballot | Illustration: Giovana Fleck/Global Voices A few months ahead of Brazil’s October presidential, gubernatorial, and senate elections, the country’s Superior Electoral Court (TSE) has raised a major concern: the number of young people registered to vote is the lowest in recent decades, and shows a downward trend. Since Brazil’s 1988 constitution — the first after the military dictatorship — voting has been optional for young people age 16 and 17, and co…