Five days after losing the first round of Brazil's presidential election, Luiz Inácio Lula da Silva's campaign found itself unable to boost Instagram posts for nearly 24 hours — while his far-right opponent Flávio Bolsonaro's campaign could. The episode joined a growing catalogue of incidents that Lula's legal team submitted to Brazil's electoral court as evidence of Meta interference. Meta called the allegations "false and unfounded," attributing the problems to technical incidents affecting campaigns across the political spectrum. The core structural fact is this: Google and TikTok banned political advertising for the election, leaving Meta's platforms as the sole large-scale paid digital campaign channel in a country where 70% of adults cite Instagram as their primary information source. Meta has earned £43 million from Brazilian election ads — 85% more than the last presidential cycle. Into that monopoly position, a pattern of one-directional failures has emerged. The watchdog CTRL+Z catalogued 1,121 reports of suppressed reach, restrictions on reposting, and account bans disproportionately hitting leftwing profiles. NetLab at the Federal University of Rio de Janeiro found at least 1,600 election ads boosted from outside Brazil, violating Brazilian law. Media outlets demonstrated that WhatsApp's AI assistant refused to generate artwork featuring "Lula" and his ballot number while complying for "Flávio." Meta attributed this to "a specific gap in our safeguards, not political bias," noting that using Lula's legal first name, Luiz, worked. Meta's own oversight board issued a pointed statement expressing concern over "recurring enforcement failures in Meta's election integrity efforts," connecting the Brazilian incidents to the temporary suspension of the anti-Trump No Kings movement's account in the US during early-voting demonstrations. The board noted an "over-enforcement of Meta's fraud policies" against Lula's ad accounts on 23 September, when his campaign advertising account was disabled for more than an hour due to a misclassification. Meta said this was a mistake, not political. Electoral court justice Marco Aurélio Bellizze found no evidence of deliberate action but ordered Meta to prove the problems had been fixed within 24 hours. When Meta failed to satisfy him, he extended the deadline. The company responded by introducing human review to prevent automated restrictions — an implicit admission that its systems were producing biased outcomes, whatever the intent. Lula's legal team went further, describing Meta as "a foreign company aligned with the Trump administration" acting as a "vector of external pressure" on Brazilian voters, though they offered no evidence of direct US involvement. The analytical problem is straightforward, as João Victor Archegas of the Institute for Technology and Society stated plainly: it is "almost impossible" to prove interference because only Meta has access to its internal data. There is no external audit, no independent scrutiny of the algorithms, and no transparency mechanism that would allow the electoral court or researchers to distinguish between a bug and a thumb on the scale. NetLab's coordinator Débora Salles framed it as a compliance failure rather than a bias finding — the company "repeatedly fails to ensure safety and compliance with electoral law and ends up undermining the integrity of the electoral process." On the eve of the runoff, NetLab identified paid ads posing as official electoral court posts containing false information — claiming voters could cast ballots online if it was raining. Whether Meta is deliberately favoring Bolsonaro, passively benefiting from its own design choices, or simply running a negligent platform in a country where it holds monopoly power over political advertising, the structural outcome is the same: a single foreign corporation with no meaningful external oversight controls the information infrastructure of a 215-million-person democracy's most consequential election. The £43 million in ad revenue, the 85% increase over the previous cycle, the 1,600 illegal foreign-boosted ads, and the pattern of one-directional technical failures all point to a platform that has absorbed enormous power without absorbing corresponding accountability. Brazil's electoral court can order Meta to behave; it cannot verify compliance. The information asymmetry is total, and the monopoly is self-reinforcing.
