Flávio Bolsonaro leads Brazil runoff with 53% to Lula's 47%, PoderData shows

Brazil's presidential runoff is set for October 25, with Senator Flávio Bolsonaro (PL) holding a six-point lead over incumbent President Luiz Inácio Lula da Silva (PT), according to a PoderData/Aya poll released October 8, 2026. Bolsonaro leads with 53% of valid votes to Lula's 47%, expanding his margin from 1.87 percentage points in the first round (where he received 47.03% versus Lula's 45.16%) to six points in the runoff.

The first-round result marked the smallest margin between the top two candidates in any first round since Brazil's 1988 redemocratization. With 33.4 million voters (21.08% of the electorate) abstaining—the highest rate since 1998—both campaigns are targeting non-voters and supporters of eliminated candidates. Over 9.3 million voters chose candidates who did not advance to the runoff. Lula's strategy focuses on mobilizing absent voters in the Northeast, where 8 million people did not vote, particularly in states like Bahia (2.2 million absences), Pernambuco (1.3 million), and others. Political scientists note that abstention patterns historically favor lower-income and less-educated voters, groups traditionally supporting Lula, though Bolsonaro also attracts significant support from these demographics. Meanwhile, Bolsonaro is attempting to consolidate votes from defeated right-wing candidates including Augusto Cury (Avante), Ronaldo Caiado (PSD), and Romeu Zema (Novo), with Caiado and Zema already endorsing him.

Expectations of victory also favor Bolsonaro. The same PoderData poll found that 54% of respondents believe Bolsonaro has better chances of winning compared to 37% for Lula. Among Bolsonaro's first-round voters, 92% express confidence in his second-round victory, while confidence among Lula's supporters stands at 76%. Political analysts describe Lula's path to reversal as extremely difficult. Datafolha director Luciana Chong characterized it as a "major challenge," noting that no candidate trailing after the first round has won a Brazilian presidential runoff since 1989. Economist Maurício Moura identified voter mobilization as Lula's only viable strategy, drawing parallels to 2006 when intensified northeastern campaigning helped Lula defeat Geraldo Alckmin.

Lula's campaign has faced criticism over communication strategy and internal organization. The president acknowledged making errors in his post-first-round remarks and subsequently began recording digital literacy videos with influencer deputies. Critics point to the campaign's handling of controversies surrounding Supreme Court Justice Alexandre de Moraes and other institutional tensions as contributing factors to the first-round result. The PoderData poll was conducted October 5–7 with 3,000 interviews across 705 municipalities, with a 1.8 percentage point margin of error. A separate Datafolha poll was also scheduled to release on October 8.