After the October 2 first-round election, Brazilians will return to the polls October 30 to decide between left-leaning front-runner Luiz Inácio Lula da Silva "Lula" and the right-wing incumbent president Jair Bolsonaro. Sidney Chalhoub, a Brazilian social historian, is David and Peggy Rockefeller Professor of History and of African and African American Studies, discusses the Brazilian elections, the challenges the country faces and the very threat to Brazilian democracy.