Electronic vote machine technician configuring Brazilian voting machine

Technician configures the Brazilian electronic voting machine, model UE 2020, on an overcast day during election preparation.

About this subject

The Brazilian electronic voting machine, officially called Urna Eletrônica, was developed by the Superior Electoral Court (TSE) in partnership with the Brazilian Army. The latest model, UE 2020, weighs about 4 kg and has a battery life of 12 hours of continuous operation. Since its implementation in 1996, the system eliminated paper ballots, significantly reducing vote counting time. Brazil is one of the few countries worldwide to hold fully electronic elections, with over 147 million eligible voters in 2022.

Machine configuration follows strict security protocols. Before each election, TSE-trained technicians install official software, perform integrity tests, and seal the device. The process includes digital signature verification and simulated voting to ensure no tampering. The machine has no internet connection; data is transmitted only after polls close via an encrypted network.

Preparation typically occurs in climate-controlled warehouses, but the image shows an overcast day, common in many Brazilian regions during the electoral period from August to October. The presence of specialized technicians reflects the care for democratic integrity. Brazil has compulsory voting for citizens aged 18 to 70, and the electronic voting machine is seen as a symbol of modernity and reliability, despite debates about potential vulnerabilities.

Interestingly, the Brazilian system inspired other countries, such as Paraguay and Argentina, to adopt similar models. The machine also includes accessibility features, such as Braille keyboard and audio for visually impaired voters. Each election, about 500,000 machines are distributed to over 5,500 municipalities, requiring complex logistics including transport by boat and plane in remote Amazon regions.

Frequently Asked Questions

How does the Brazilian electronic voting machine work?

The electronic voting machine is a portable computer that records votes electronically. The voter types the candidate's number and confirms, and the vote is stored in encrypted memory. At the end, data is transmitted to the TSE for tallying.

Is the electronic voting machine secure against fraud?

The system has multiple security layers: physical seals, digital signatures, public integrity tests, and auditing. There is no internet connection during voting, and the source code is open for analysis.

How many electronic voting machines are used in Brazilian elections?

About 500,000 machines are distributed to over 5,500 municipalities. Each polling station has one machine, with reserves for possible replacements.