(COMBO) This combination of pictures created on September 13, 2026 shows Brazilian Supreme Court Justice Alexandre de Moraes (L) during a court session at the Supreme Federal Court (STF) in Brasilia on September 2, 2026; and Judge Andre Mendonca during a trial of the regulation of social networks at the Brazilian Supreme Court in Brasilia on June 4, 2025. Two Brazilian Supreme Court judges are at the center of an unprecedented clash that is shaking the country's highest judicial institution on the eve of the October presidential election. On one side is Alexandre de Moraes, considered by the right as the bane of the Bolsonaro movement; on the other is Andre Mendonca, appointed by Jair Bolsonaro himself. The two judges will face off in a session broadcast on national television. (Photo by Evaristo Sa / AFP via Getty Images)