The order went out on Saturday, fifteen days before Brazilians vote again, and it asked a question Meta has rarely been forced to answer in writing: did the company reduce the reach of the president’s campaign?
Brazil’s Superior Electoral Court gave Meta 48 hours to explain whether it suppressed content from President Luiz Inacio Lula da Silva’s campaign, and to account, item by item, for anomalies in the video metrics of his official accounts. The demand followed a filing by Lula’s campaign team, which accused the company of election interference.
The complaint listed specific failures. Meta blocked Lula’s profile from promoting posts in Instagram’s feed, the campaign said. One post’s view count stopped updating. Before the first round of voting on October 4, the accounts of Lula and other left-wing figures disappeared from search results, the campaign said, and it argued that the platform was amplifying right-wing content. The campaign said it would also file with Brazil’s data protection authority, widening the case beyond the electoral court.
Meta denied it. The company’s Brazilian arm said it had not interfered in the election and that the technical problems described were not limited to Brazil or to individual accounts. The claims, it said in a public statement, are false.
The timing explains the temperature. Lula finished second in the first round with about 45% of the vote to 47.1% for Senator Flavio Bolsonaro of the Liberal Party, the son of the former president, forcing the runoff set for October 25. A candidate who trails has reason to treat a change in algorithmic distribution as a material event, and Lula’s team has treated it that way from the start.
Brazil’s electoral court is one of the few institutions in the world with a working apparatus for holding platforms to account during a campaign. It can order content removed, compel companies to answer and fine them. Ignoring the Saturday order would hand the court a reason to escalate, and Brazilian electoral law gives judges wide discretion in the final weeks before a vote.
Meta has more exposure in Brazil than in almost any market outside the United States. WhatsApp is installed on the overwhelming majority of Brazilian smartphones, and Instagram is a leading source of news for tens of millions of voters. The company’s advertising business in Latin America’s largest economy depends on the same products at the centre of the dispute.
Brasilia has also been the company’s most persistent regulator. Brazil’s data protection authority suspended Meta’s use of Brazilian users’ data for AI training in 2024. The government gave the company 72 hours to explain changes to its fact-checking programme in early 2025. Brazil’s Supreme Court blocked X for six weeks that year in a fight over court orders, and the platform returned only after complying.
The exchange reflects a wider pattern in which elections have become a test of platform transparency. Researchers who once relied on public tools to track how political content spreads have lost most of that access. Meta retired CrowdTangle in 2024 and replaced it with a content library limited to approved institutions. The result is that a dispute like the one in Brazil has to be settled on the company’s own data, which is what the court asked for.
Analysts said the technical questions posed to Meta are harder to answer than they look. Ranking systems adjust constantly, and there is no public counterfactual for how far a given post would have travelled. Meta can describe what its systems did, but demonstrating that nothing was throttled means trusting its internal records.
For the Bolsonaro campaign, the complaint is an opening. Lula’s team has framed the matter as a question of fairness rather than a claim of coordinated sabotage, and it has pushed the dispute into a legal process rather than a public campaign. Meta has treated the allegations as a technical malfunction and declined to discuss individual accounts. The court, for its part, has not confined itself to the company’s conduct: on the same day it ordered Meta to respond, it suspended one of Lula’s own campaign advertisements on the grounds that it could mislead voters about his rivals.
What happens next depends on what Meta files within the two days. A detailed accounting would probably close the matter. A thin one, or another denial without figures, would give the court grounds for further orders just as early voting logistics take over the campaign calendar.
Meta has told investors that election-related regulation is among its largest regulatory risks, without naming the countries where the pressure is sharpest. Brazil is one of them. The country combines one of the company’s biggest user bases, an active national debate over platform power and a bench of judges that has shown it will act quickly.
That combination is why a 48-hour deadline in an election year matters beyond Brasilia. Regulators in Europe, Canada and Australia have looked at Brazilian rulings for language they can borrow, and one more precedent will be written here before the runoff.
