In a historic comeback, Brazil's President Luiz Inácio Lula da Silva secured a fourth term in the tight 2026 runoff election. A key factor in this turnaround was an unconventional digital tool: a massive WhatsApp channel called 'Exército do Lula'.
A Comeback for the Ages
The
political climate was tense leading up to the October 25 runoff. Lula had trailed his right-wing opponent, Senator Flávio Bolsonaro, in the first round of voting. However, in a stunning reversal, Lula won the presidency with 51.8% of the vote, a margin of over 4.4 million ballots. It was the first time since 1989 that a Brazilian presidential candidate lost the runoff after leading in the first round. The victory came after a significant mobilization effort that saw voter turnout increase by nearly 3 million people between the two rounds. This set the stage for a new chapter in Brazilian politics, one heavily influenced by digital strategy.
Inside 'Lula's Army'
At the heart of the digital push was 'Exército do Lula' or 'Lula’s Army', a WhatsApp channel created and managed by Congressman André Janones, a popular and aggressive digital campaigner. Functioning as a central distribution hub, the channel was used to mobilize supporters and coordinate actions across social media. In the three weeks between the election rounds, the channel’s following exploded, surging from around 60,000 to over 10 million members. Janones, whom Lula publicly called 'our general', used the platform to issue daily 'missions' to his followers, framing them as digital soldiers in the campaign.
A New Digital Playbook
The channel's strategy marked a significant shift for Brazil's left, which had historically struggled to match the right's online dominance. Instead of just forwarding official campaign ads, Janones and his administrators sent urgent, military-style directives in all-caps, commanding 'soldiers' to perform specific tasks. These missions included pushing certain hashtags on X (formerly Twitter), creating and sharing memes, spiking Google searches for scandals related to Bolsonaro, and sharing specific videos. This tactic turned millions of ordinary supporters into an organized and highly motivated digital force, giving the campaign a direct and rapid line of communication that bypassed traditional media.
WhatsApp's Enduring Power in Brazil
WhatsApp's role is uniquely powerful in Brazil, where it is installed on nearly every smartphone. The app was central to the 2018 election that brought Jair Bolsonaro to power, though its use then was characterized by decentralized private groups and the spread of disinformation. The 2026 election saw a different model: a massive, public-facing, and centralized channel. The 'Lula's Army' channel even faced legal challenges, including a temporary suspension order from a judge that was later overturned. Ultimately, Lula's campaign registered the channel with the Superior Electoral Court (TSE) to comply with electoral regulations.
Lessons From a Digital Battlefield
Analysts credit the success of 'Lula's Army' with energizing supporters, increasing voter turnout, and effectively countering the right's digital machine. The strategy proved that the left could adopt and master the aggressive algorithmic mobilization tactics previously dominated by their opponents. However, political scientists caution against attributing the entire victory to a single WhatsApp channel. They argue that the comeback was a result of combining this potent digital urgency with robust, real-world grassroots mobilization. The digital messages helped coordinate efforts, but local volunteers took that energy into communities to persuade undecided voters and ensure they turned up to vote.
