SAO PAULO, Aug 5 (Reuters) - Brazilian President Luiz Inacio Lula da Silva continues to lead Senator Flavio Bolsonaro, although the right-wing challenger has narrowed the gap with the leftist incumbent ahead of October's election, a Quaest poll commissioned by brokerage Genial showed on Wednesday.
In a simulated second-round runoff, Lula would receive 44%support compared with 39% for Bolsonaro. A July 15 Quaest poll had Lula leading Bolsonaro by 45% to 37%.
(Reporting by Gabriel Araujo in Sao Paulo and Michael Susin in Barcelona, Editing by Louise Heavens)