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Story summary
- Brazilian voters will cast ballots in the first round of the presidential election on Sunday.
- President Luiz Inácio Lula da Silva, 80, seeks an unprecedented fourth term.
- Senator Flávio Bolsonaro, 45, is the main far-right challenger and son of former President Jair Bolsonaro.
- Jair Bolsonaro is serving a 27-year prison sentence for an alleged coup attempt.
- A late-September Quaest poll found 56% would refuse Bolsonaro and 54% would refuse Lula.