Chamber of Deputies plenary during a session vote

Plenary of the Chamber of Deputies during a morning voting session, with deputies seated and electronic panel.

About this subject

The Ulysses Guimarães Plenary, located in the Chamber of Deputies in Brasília, is the main stage for federal legislative decisions. During a voting session, the 513 federal deputies occupy seats arranged in a semicircle, with an electronic panel at the front recording votes. Ordinary sessions typically occur on Wednesdays and Thursdays afternoons, but morning votes can be called for urgent agendas, such as provisional measures or highlights of amendments.

The plenary has capacity for 513 deputies, plus galleries for visitors and press. Electronic voting, implemented in 1996, streamlined the process: each deputy registers their vote on individual terminals, with results displayed in real time on the panel. Green indicates approval, red rejection, and yellow abstention. The President of the Chamber, currently Arthur Lira (PP-AL), presides from the high table.

Curiously, the plenary was the stage for historic moments, such as the impeachment vote of President Dilma Rousseff in 2016, which lasted over 20 hours. The modernist architecture by Oscar Niemeyer provides privileged acoustics and visibility. During the COVID-19 pandemic, the plenary adopted a hybrid voting system, with deputies participating remotely from their offices.

The morning session depicted in the image reflects the intense pace of the legislature: before votes, there are leadership discussions and agenda guidelines. The electronic panel, with a blue background, displays partial results while deputies debate. The presence of aides and security guards on the sides completes the scenario of functioning Brazilian representative democracy.

Frequently Asked Questions

How many federal deputies make up the Chamber of Deputies?

The Chamber of Deputies consists of 513 federal deputies, elected by proportional representation for four-year terms.

How does the electronic voting system work in the plenary?

Each deputy registers their vote on an individual terminal. The electronic panel displays results in real time: green for approval, red for rejection, and yellow for abstention.

What is the importance of the Ulysses Guimarães Plenary?

It is the main deliberation venue of the Chamber of Deputies, where votes on laws, constitutional amendments, and other matters take place. Designed by Oscar Niemeyer, it symbolizes Brazilian democracy.