Overview

• At a ceremony on Oct. 2 led by TSE president Cármen Lúcia, the court opened the software for the 2026 voting system to accredited auditors, marking the formal start of preparations.
• The code can be reviewed in a controlled room at TSE headquarters in Brasília until the system sealing phase scheduled for August 2026.
• Authorized bodies include Congress, the CGU, political parties, the Public Ministry, the OAB, the Federal Police, universities and technical organizations, with access extended to the full suite of urn software.
• Entry requires prior registration and scheduled visits, with individual logins on TSE-provided computers and a ban on personal electronic devices.
• The audit calendar sets the Public Security Test for November 2025, confirmation tests in March 2026, system sealing in August, media generation and machine preparation in September, plus election-day checks and post-election data releases.