All eyes in Brazil are on the presidential election, but voters will also elect their parliamentarians this Sunday, October 4, 2026. These parliamentarians could hold the fate of former President Jair Bolsonaro, who is currently under house arrest, in their hands. Over 158 million Brazilians will cast their votes using six two-to-five-digit codes on electronic voting machines. The election is a key battleground between President Lula’s allies and supporters of Bolsonaro. The outcome will significantly impact the political landscape, particularly regarding potential legal proceedings against Bolsonaro. This parliamentary contest is unfolding alongside the high-stakes presidential race in Brazil. The article first appeared on Business News.