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Voto de Verdade

Beta version. Voto de Verdade is under development: it may contain errors and change without notice. When in doubt, check the Chamber's official text.

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How the site works

Beta version, under constant development

Voto de Verdade is a beta version and under constant development. It may contain errors, and what it shows and how it works may change. When in doubt, check the Chamber's official text. We want to bring society closer to Congress, with transparency and visibility into what legislators do, in a simple and practical way. To that end, the site aims to:

Neutral and nonpartisan, with no grades and no rankings

Voto de Verdade does not grade, rank or say who voted right or wrong. It shows how each deputy voted. Voting yes or no in a vote does not, by itself, tell whether the deputy supports the subject of the bill: many votes are on amendments, substitute texts or separate parts of the text.

Where the data comes from

From the Open Data portal of the Chamber of Deputies. The site shows 941 floor votes, from February 7, 2023 to September 3, 2026, and is updated every day.

Only the Chamber of Deputies, for now

The site covers federal deputies. The Senate, state assemblies and city councils are not included.

Which votes the site shows

A bill usually goes through several votes on the floor. Only the ones that decide on the bill itself, that is, to approve or reject it, are included here. Votes on urgency (which only decide whether the bill moves faster), on motions, on isolated amendments or separate votes on one passage (which vote on changing a part of the text) and on procedure are left out. That is why a bill that was voted on many times may appear with only one vote. Sometimes the Chamber votes on a substitute text, a new text that replaces the original. That vote appears, with a warning: the summary was written from the official summary (ementa) of the original bill, and the text voted on may be different.

Numbers and data to download

The “By the numbers” page shows votes over time, by subject and by result, how many deputies voted and the tally of roll-call votes, with a filter by year. Each block of numbers and the lists of bills, deputies and votes have buttons to download what is on the screen as CSV (which opens in a spreadsheet) or JSON, with the filter already applied. When you use the data, credit Voto de Verdade and the Chamber of Deputies.

Subject and summary are written by artificial intelligence

An artificial intelligence reads the official text of each bill, chooses the subject and writes a summary in plain language. It can be wrong. When there is doubt, the bill shows a warning. Nobody reviews the summaries before they go live, and for now the site has no way to request corrections. If something looks odd, check the official text.

See how artificial intelligence is used, with the numbers

Why not every bill shows each deputy's vote

725 of the 941 votes (77%) were symbolic: the parties reach an agreement and the result is announced without recording each deputy's vote.

License and use of the content

The site's code is open, under the MIT license. The site's texts and the summaries written by artificial intelligence can be copied and used by anyone, including in news stories, as long as they credit Voto de Verdade and the address votodeverdade.com.br (CC BY 4.0 license). The original data belongs to the Chamber of Deputies, which has its own rules. We ask that the content not be used to train artificial intelligence models. Consulting it to answer questions, citing the site, is welcome.

Who is behind it, and privacy

Voto de Verdade is an independent site, with no ties to the Chamber of Deputies, to parties or to candidates. It uses no cookies and no tools that track visitors.