Luiz Inácio Lula da Silva has won a fourth nonconsecutive term as Brazil's president, defeating far-right senator Flávio Bolsonaro 51.79% to 48.21% — a margin of roughly 4.3 million votes. It is the first time in Brazil's post-1985 democratic era that a first-round runner-up has overturned the result in the second ballot. Lula, who turns 81 on Tuesday, called it "a defeat for denialism." Bolsonaro has refused to concede, citing the extension of voting hours — a move both campaigns had requested. The turnaround was dramatic. In the first round earlier this month, Flávio Bolsonaro led with 56.1 million votes (47.03%) to Lula's 53.8 million (45.16%). A record 21% abstention rate in that round — concentrated among lower-income, pro-Lula demographics — galvanised progressive mobilisation. Millions joined a WhatsApp channel called "Lula's army" distributing viral content instructions. The 80-year-old president, who only acquired his first smartphone days before the vote, began posting on Instagram and TikTok, and for the first time his digital reach overtook Bolsonaro's. The Bolsonaro campaign was weakened by scandal. Brazilian magazine Piauí reported that during the 2020 coronavirus peak, Flávio Bolsonaro attended a boat party with sex workers and vaccine lobbyists seeking deals with his father's government. Jair Bolsonaro himself is serving a 27-year prison sentence for plotting a coup after losing the 2022 election. The evangelical-populist coalition his son inherited remains formidable — but the candidate's personal baggage eroded its margins. The environmental stakes are immediate. Under Lula's current term, Amazon deforestation fell by more than 70%. He launched operations to expel illegal gold miners from the Yanomami Indigenous reserve, taking on a multibillion-dollar extraction industry turbo-charged by record global gold prices. Bolsonaro's father had facilitated the illegal gold rush. Lula's re-election means these policies continue — though the subject barely featured in the campaign's final debate, overshadowed by economic and security concerns. Geopolitically, the result consolidates Lula's multilateral foreign policy. He has rejected invitations to join the US-backed coalition conducting military operations against drug cartels alongside the Pentagon. Donald Trump, who imposed 50% tariffs on Brazilian imports after denouncing Jair Bolsonaro's trial as a "witch-hunt," did not openly endorse Flávio but styled himself as a Latin American kingmaker. Lula has framed himself as a defender against Trump's "colonial" designs, maintaining pragmatic relations with the US, China, and Russia simultaneously. The structural challenge is that Bolsonarismo is not a candidacy — it is a movement. Evangelical Christianity has expanded dramatically across Brazil, with church leaders backing socially conservative policies. Pro-gun sentiment, frustration with chronic urban crime, and effective social media operation gave Bolsonaro 48.21% of the vote despite his father's imprisonment. A dozen watchdogs and research groups have published reports alleging Meta may have favoured the senator's campaign; Brazil's electoral court ordered Meta not to give candidates "unequal treatment," while Meta called the allegations "false and unfounded." Lula's win is real but narrow. The democratic institutions held, Amazon protections continue, and multilateral diplomacy survives. But nearly half the electorate voted for a Bolsonaro — again. The far-right's social infrastructure, from evangelical networks to digital operations, is durable. This is a reprieve, not a resolution.