SAO PAULO, Sept 29 (Reuters) - Brazilian President Luiz Inacio Lula da Silva and Senator Flavio Bolsonaro remain statistically tied in a simulated runoff ahead of next month's election, an AtlasIntel/Bloomberg poll showed on Tuesday, with the right-wing challenger now 0.1 percentage point ahead of the incumbent — within the survey's margin of error.
• If a runoff were held, Bolsonaro would receive 47.7% of voter support, compared with 47.6% for Lula, the poll said.
• In a September 23 poll, Lula led the eldest son of former President Jair Bolsonaro by 47.7% to 47.4%.
• In a first-round scenario, Lula would receive 45.3% of voter support, followed by Bolsonaro (42.2%), Renan Santos (5.2%) and Augusto Cury (2%) according to Tuesday's poll.
• The previous poll showed Lula at 45.8% and Bolsonaro at 43.4% in the first round.
• If no candidate wins more than 50% of valid votes in the October 4 election, the two frontrunners advance to a runoff on October 25.
• AtlasIntel surveyed 5,005 people between September 23 and 28.
(Reporting by Fernando Cardoso and Isabel Teles; Editing by Andrew Heavens)
