SAO PAULO, Aug 11 (Reuters) – Brazil’s President Luiz ​Inacio Lula ‌da Silva’s advantage over Senator Flavio Bolsonaro in a ‌potential ​runoff ahead ⁠of October’s ⁠general election narrowed, a CNT/MDA poll showed on Tuesday. Lula ​would receive 48.0% of ⁠the votes ⁠in a ​runoff, compared with ​39.1% for Flavio Bolsonaro, ‌son of former President Jair Bolsonaro, according ⁠to the poll. In a June survey, Lula ⁠was ‌seen with ⁠49.3% of ​the ‌votes, and Bolsonaro ​with ⁠36.8%. (Reporting by Isabel Teles; Writing by Fernando Cardoso; Editing by Chizu ​Nomiyama)