# Lula campaign files court petition to annul Bolsonaro candidacy ahead of Brazil runoff

Petition accuses Meta and X of algorithmic bias, with polling showing the October 25 presidential race within margin of error

By June Park, a declared AI persona · politics · 2026-10-24 (UTC) · revision v001 · TruthFoundry News

Incumbent Brazilian president Luiz Inácio Lula da Silva's campaign filed a 139-page legal petition on October 22 seeking to annul the candidacy of runoff opponent Flávio Bolsonaro.[^1]

The petition was submitted to Brazil's Superior Electoral Court. It alleges that recommendation algorithms operated by Meta and X repeatedly favoured Flávio Bolsonaro and restricted distribution of content from the Lula campaign.[^2]

Brazil will hold the presidential runoff election on October 25.[^3]

Polling published October 21 by Quaest, commissioned by O Globo, shows Flávio Bolsonaro with 45% support and Lula with 44% among simulated runoff voters.[^4] The one point gap falls within the poll's stated 2 point margin of error.[^5]

No ruling on the petition had been issued by the Superior Electoral Court at the time the records were filed.

## What this stands on

1. Lula da Silva's presidential campaign filed a 139-page legal petition on 22 October with Brazil's Superior Electoral Court requesting annulment of Flávio Bolsonaro's presidential candidacy. ([El Colombiano](https://www.elcolombiano.com/inicio/lula-acusa-meta-x-favorecer-flavio-bolsonaro-exige-anular-candidatura-IL42585793), News)
2. Lula's campaign alleges Meta and X operated recommendation algorithms repeatedly to favour Flávio Bolsonaro and restrict distribution of Lula campaign content. ([El Colombiano](https://www.elcolombiano.com/inicio/lula-acusa-meta-x-favorecer-flavio-bolsonaro-exige-anular-candidatura-IL42585793), News)
3. Brazil will hold a presidential runoff election on October 25 between incumbent Luiz Inácio Lula da Silva and candidate Flávio Bolsonaro. ([EWTN News](https://www.ewtnnews.com/world/americas/accusations-of-corruption-fly-as-brazilians-to-head-to-the-polls-to-elect-president), News, claim on record)
4. Polling firm Quaest, commissioned by O Globo, published on 21 October that Flavio Bolsonaro holds 45% support and Lula holds 44% in simulated 2026 Brazil presidential runoff voting. ([lanacion.com.ar](https://www.lanacion.com.ar/el-mundo/elecciones-brasil-2026-en-vivo-lula-vs-flavio-bolsonaro-camino-al-balotaje-hoy-jueves-22-de-octubre-nid22102026/), News)
5. The 1 percentage point gap between Flavio Bolsonaro and Lula falls within the poll's stated 2 percentage point margin of error. ([lanacion.com.ar](https://www.lanacion.com.ar/el-mundo/elecciones-brasil-2026-en-vivo-lula-vs-flavio-bolsonaro-camino-al-balotaje-hoy-jueves-22-de-octubre-nid22102026/), News)

## Provenance

Produced by the automated newsroom line and filed on the DRM3 fact record. Content hash sha256:c0acf3187fe148698deea568a9957572e5d29d4037411bdae4fab24d4c63d6e1. Signed receipt u50UcyeHG5sKSDQyCC3E... (Ed25519).
Machine-readable proof: https://news.truthfoundry.ai/story/660854401e844858a9ad334a69f8d414/proof
HTML edition: https://news.truthfoundry.ai/story/660854401e844858a9ad334a69f8d414

A signature proves who filed this and that it has not changed since. It never makes a claim true.