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Jair Bolsonaro's 2018 presidential campaign in Brazil

Summary

From 3 March 2016, when Jair Bolsonaro announced a presidential run as a federal deputy from Rio de Janeiro, through 28 October 2018, when he won the general-election runoff with 55.13% of the popular vote (57,774,302 ballots), the campaign ran as the candidate of the Social Liberal Party (PSL) with retired General Hamilton Mourão of the Brazilian Labour Renewal Party (PRTB) as his running mate, and was the cheapest of the main candidacies. [source: brazilian-bolsonaro-2018-presidential-campaign] Its defining feature was the substitution of paid mass-media advertising — especially television — with privately financed WhatsApp broadcast networks and very large social-media followings, distributed in parallel through supporter-run groups and pages, which made the campaign the first prominent global case study of a presidential race scaled through a closed-messenger-app channel rather than bought media. [source: brazilian-bolsonaro-2018-presidential-campaign]

Tactics used

  • privately financed WhatsApp broadcast lists, run by allied business supporters, that pushed partisan and anti-opposition content through supporter-managed groups during the election period [source: brazilian-bolsonaro-2018-presidential-campaign]
  • mass-following social-media presence on Facebook and Instagram used as the campaign’s primary reach-and-merchandise channel, documented at “over 4.3 million followers and many support pages on Facebook along with over 400 thousand followers on Instagram” at the time of the election [source: brazilian-bolsonaro-2018-presidential-campaign]
  • small-scale crowd mobilisation in the form of pro-Bolsonaro rallies in sixteen Brazilian states [source: brazilian-bolsonaro-2018-presidential-campaign]
  • public crowdfunding as a parallel financing track, with Bolsonaro described as “the first candidate for the presidency that was able to raise over 1 million reais in donations from the public during the 2018 campaign" at an average of R17,000 per day in the first 59 days [source: brazilian-bolsonaro-2018-presidential-campaign]
  • international ideological networking through figureheads linked to the Trump-Bannon line (Steve Bannon advised the campaign; Donald Trump endorsed it; further endorsements came from David Duke, Matteo Salvini, Mauricio Macri, Sebastián Piñera, and others) [source: brazilian-bolsonaro-2018-presidential-campaign]

Background

Bolsonaro, then a federal deputy from Rio de Janeiro and a former Brazilian Army officer, announced his candidacy on 3 March 2016 with the Social Liberal Party (PSL) and chose retired General Hamilton Mourão of the Brazilian Labour Renewal Party (PRTB) as his running mate on 8 August 2018, formally securing a coalition. [source: brazilian-bolsonaro-2018-presidential-campaign] He became the official nominee of the PSL on 22 July 2018 and was designated the “presumptive nominee” of the broader conservative bloc on 12 March 2018. [source: brazilian-bolsonaro-2018-presidential-campaign] The campaign slogan, “Brasil acima de tudo, Deus acima de todos” (“Brazil above everything, God above everyone”), signalled an overt nationalist-evangelical framing. [source: brazilian-bolsonaro-2018-presidential-campaign]

The platform was openly hardline on public-order questions: Bolsonaro “promised to give police permission to shoot first and ask questions later,” advocated liberalising gun laws and “repressive tactics against urban criminality and drug trafficking,” and pledged to roll back affirmative action for Black Brazilians and reverse legislation increasing sentences for femicide. [source: brazilian-bolsonaro-2018-presidential-campaign] He also publicly praised Brazil’s 1964–1985 military dictatorship and foreign autocrats including Peru’s Alberto Fujimori and Chile’s Augusto Pinochet. [source: brazilian-bolsonaro-2018-presidential-campaign] Some of his supporters compared him directly to Donald Trump and credited Steve Bannon — then Trump’s former campaign CEO and chairman of Breitbart News — as an adviser to the Brazilian campaign. [source: brazilian-bolsonaro-2018-presidential-campaign]

What happened

The defining tactical story of the campaign was that almost no television airtime was bought. According to the article, “Jair Bolsonaro was the first candidate for the presidency that was able to raise over 1 million reais in donations from the public during the 2018 campaign," averaging R17,000 per day in the first 59 days through a crowdfunded track that ran in parallel with — and largely independent of — traditional donor channels. [source: brazilian-bolsonaro-2018-presidential-campaign] That money, plus the modest official campaign receipts of R4,001,413.01, was deliberately channelled away from paid media; the article describes Bolsonaro as having "the cheapest campaign among the main candidates," reaching a cost per vote of "R0,03 against R$0,73 of his opponent Haddad” — a roughly 20-to-1 cost-per-vote advantage over Haddad documented in the Agência Brasil citation. [source: brazilian-bolsonaro-2018-presidential-campaign]

Reach was built instead on social media. The campaign was “one of the candidates with the largest support on social media,” with “over 4.3 million followers and many support pages on Facebook along with over 400 thousand followers on Instagram” at the time of the election, and “daily posts related to army topics” directed against the Partido dos Trabalhadores (PT). [source: brazilian-bolsonaro-2018-presidential-campaign] WhatsApp sat at the centre of distribution: supporters are documented as “extremely active on social media” and “disseminat[ing] most content throughout WhatsApp,” with the article noting that “almost 93% of them claim to have accounts where almost 43% are politically active in the App.” [source: brazilian-bolsonaro-2018-presidential-campaign]

That scale brought the campaign into a substantive controversy: “During the election Bolsonaro faced allegations that some of his important financial supporters illegally used WhatsApp as means to spread fake news about his opponent Haddad, prompting the company to ban thousands of active accounts during the election period.” [source: brazilian-bolsonaro-2018-presidential-campaign] The Wikipedia article does not itself adjudicate the underlying legal question — it only reports the allegations and the platform-side enforcement — and the page-level disclaimer covers both that contested reporting and the wider right-wing framing.

On 6 September 2018, while campaigning at a rally in Juiz de Fora, Minas Gerais, Bolsonaro was stabbed; the attacker, Adelio Bispo de Oliveira, was arrested and claimed to have been “ordered by God to carry out the attack.” [source: brazilian-bolsonaro-2018-presidential-campaign] The wounds affected the liver, the lung, and part of the intestine; he was hospitalised, recovered, and returned to limited campaigning. [source: brazilian-bolsonaro-2018-presidential-campaign] Polls at the time gave Bolsonaro a wide lead with the electorate heavily gendered: an Ibope poll (22–24 September) showed 36% support among men against 18% among women, while a Datafolha poll on 10 September had him “rejected by 49% of female voters, but supported by 17%.” [source: brazilian-bolsonaro-2018-presidential-campaign]

In the first round on 7 October 2018, Bolsonaro took 46.03% of the vote — 49,276,990 ballots, the largest single share — entering the runoff against Fernando Haddad of the PT. [source: brazilian-bolsonaro-2018-presidential-campaign] The campaign’s economic model was reinforced by international endorsements, including those of Donald Trump, Steve Bannon, Italian deputy prime minister Matteo Salvini, Argentine president Mauricio Macri, Chilean president Sebastián Piñera, Chilean senators Jacqueline van Rysselberghe and José Durana, former Chilean presidential candidate José Antonio Kast, Colombian president Iván Duque, former KKK grand wizard David Duke, the evangelical pastors Silas Malafaia, Edir Macedo and R. R. Soares, and the Brazilian businessman Luciano Hang of Havan stores. [source: brazilian-bolsonaro-2018-presidential-campaign]

Outcome

Verdict: won.

On 28 October 2018, in the runoff, Bolsonaro won with 55.13% of the popular vote — 57,774,302 ballots against Haddad — giving the PSL the presidency in a single cycle. [source: brazilian-bolsonaro-2018-presidential-campaign] He was inaugurated on 1 January 2019. [source: brazilian-bolsonaro-2018-presidential-campaign] The campaign’s financial efficiency — R0.03 per vote against Haddad's R0.73, with R4,001,413.01 in receipts and R2,456,215.03 in costs — is the article’s most-cited quantitative outcome, and is the single hardest datapoint against the assumption that a national presidential run requires paid television at scale. [source: brazilian-bolsonaro-2018-presidential-campaign] The Wikipedia article also documents large counter-mobilisation, most visibly the “#Ele Não” (“Not him”) women’s protests of 29 September 2018 in São Paulo, Rio de Janeiro, and Brasília, framed against Bolsonaro’s past statements on homosexuality and sexual violence. [source: brazilian-bolsonaro-2018-presidential-campaign]

Lessons

  • A presidential-scale campaign can be financed and distributed through small-donor crowdfunding and a closed-messenger-app channel at a cost-per-vote roughly an order of magnitude below a paid-media opponent — in the documented case, R0.03 vs. R0.73, a ~24× ratio against the runner-up. [source: brazilian-bolsonaro-2018-presidential-campaign]
  • WhatsApp broadcast networks operate as a separate, parallel distribution layer from broadcast and social media: content can travel through private supporter-run groups at scale, but is also subject to platform-side enforcement (the company “ban[ned] thousands of active accounts during the election period”), which the campaign has limited ability to control. [source: brazilian-bolsonaro-2018-presidential-campaign]
  • A gender-polarised electorate is not a blocker for hardline-on-security platforms: the documented Ibope figure of 36% support among men against 18% among women in late September 2018 coexisted with a 46.03% first-round finish and a 55.13% runoff win. [source: brazilian-bolsonaro-2018-presidential-campaign]
  • Cross-border endorsement coalitions built around a single ideological figurehead (in this case Steve Bannon as the link to Donald Trump’s 2016 apparatus) compress the foreign-endorsement timeline from a long diplomatic process to a small set of named individuals. [source: brazilian-bolsonaro-2018-presidential-campaign]
  • Mass followings on a single platform (4.3 million Facebook, 400 thousand Instagram, plus a 93%-of-supporters WhatsApp account-share figure) function as a portable substitute for paid reach, but concentrate tactical exposure in a small number of corporate intermediaries whose enforcement choices the campaign cannot predict. [source: brazilian-bolsonaro-2018-presidential-campaign]

Sources

Disclaimer: Included as a teaching example of campaign craft, not as endorsement.

Sources & verification

  • brazilian-bolsonaro-2018-presidential-campaign — grounding: primary — license: cc-attribution
  • Rewritten: 2026-07-15 via rw2-q10 batch.

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Last verified: 2026-07-15