Lula da Silva and Flávio Bolsonaro directed corruption allegations and personal attacks at each other during their first televised encounter, held seven days before the October 25 presidential runoff, while observers and members of the public noted that neither candidate put forward many detailed policy positions.

Spanning close to two hours, the exchange was broadcast on the night of 18 October under the joint production of broadcaster Band alongside Estadão, TV Gazeta, TV Cultura, and Jovem Pan. The pair met in person for the first time, having each opted out of the pre-first-round debates.

With 47% of valid votes counted against Lula's 45% — a two-point gap — Bolsonaro moved into first place following the October 4 opening round; his father, Jair Bolsonaro, is a former president who has been convicted. Polling conducted at an earlier stage handed that candidate a substantial lead, whereas figures gathered more recently point toward a contest that has narrowed considerably.

At 80 years old, Lula is mounting a bid for the presidency that would mark his fourth time holding the office, though not in consecutive terms.

At times, the exchange grew loud enough to swallow individual contributions, and the private affairs of relatives found their way into the debate on several occasions. Outbursts from the crowd — both vocal and disruptive — punctuated the proceedings throughout.

During the opening segment of the debate, Lula directed sustained questioning at Bolsonaro over a BRL 134mn (approximately $26.5mn) financing arrangement — of which $12mn was reportedly disbursed — that Bolsonaro had sought from banker Daniel Vorcaro, associated with the now-defunct Banco Master, to underwrite a film honouring his father, with Lula asking how such a sum could be requested without any public accounting of where the funds went. Bolsonaro at first set the question aside, then later stated that the funds had been directed toward the film — adding, in his own words, that he had addressed the matter on multiple prior occasions and stood ready to do so again whenever needed.

According to that account, an audio recording attributed to Vorcaro contains a reference to BRL 30 million in payments to the Lula Institute that were reportedly kept off official books. Lula put forward a proposal that both he and his rival disclose their bank and telephone records for public review ahead of the election, with roughly a quarter-hour left on the debate clock when the proposal was made.

Bolsonaro argued on the campaign trail that removing Lula from office and addressing corruption would strengthen the economy, whereas Lula pointed to his record in government and the social programmes he had introduced during his time in power. Lobbyist Roberta Luchsinger came up repeatedly in Bolsonaro's remarks, a pattern that kept any direct contrast between Lula's administration and that of Bolsonaro's father off the table.

Ten columnists surveyed by a prominent broadcaster handed Bolsonaro an average rating of 2.3 out of 5, nudging ahead of Lula's 2.2, with a majority of the panellists placing him marginally higher. Opinion writers split on the debate's outcome — one camp arguing that the senator sidestepped most of the questions directed at him, while another held that Lula appeared uncomfortable and passed up chances to challenge his opponent.

Findings from a qualitative study headed by political scientist Renato Dorgan — picked up by a broadcast news outlet — pointed in the same direction when it came to how the debate held up overall. Audience members — some arriving with firm views already formed, others still undecided — registered their reactions in real time through a colour-coded card system, with a notable portion rating the event poorly.

Among the group's assessments, Lula drew a positive rating on 44.79% of occasions, while Bolsonaro's share of favourable evaluations stood at 39.06%. Unfavourable assessments accounted for 35.42% of Lula's total ratings and 46.88% of those recorded for his opponent; analyst Dorgan noted that Lula drew on social policy with apparent conviction, while Bolsonaro's address on public safety resonated with audiences, though the senator's position on healthcare failed to carry the same persuasive weight.

On public health and the proposal to end the six-day working week, Lula's contributions to the debate drew the most attention. On the topic of his economic stewardship, he pointed to a budget surplus generated under his watch and took issue with the approach taken to transfer state-owned power company Eletrobras into private hands.

Lula's description of Bolsonaro as a "Rio de Janeiro hustler" drew attention given that the state of Rio de Janeiro is territory where he trailed in the first round and where he is seeking to build support.

Whoever prevails at the ballot box will assume leadership of a nation of 214 million people — the largest economy across the Latin American region. Analysts have noted that a Bolsonaro win could deepen ties between the US and Latin America, a relationship his close alignment with Trump has already been reshaping. Under a Lula presidency, analysts have noted that Brazil's foreign-policy orientation could shift toward closer engagement with Beijing while putting some distance between Brasília and the United States.

Rallies drawing tens of thousands of people backing each of the two candidates unfolded across São Paulo, Rio de Janeiro, and a number of other cities on October 18. Crowds backing Bolsonaro lined Paulista Avenue in São Paulo to call for his release, with the former president currently serving a 27-year prison term following a court finding that he participated in a scheme to prevent Luiz Inácio Lula da Silva — who defeated him in the 2022 presidential vote — from taking office.

On that same October 18th, a formal request from federal police landed before the Supreme Court, seeking authorisation to probe Flávio Bolsonaro on money laundering allegations tied to a lawyer with close connections to him. Authorities have also opened a probe into the senator's connections to Vorcaro. In both matters, any suggestion of wrongdoing on his part has been met with a flat denial.

Plans call for a follow-up debate to take place on the 23rd of October.