President Luiz Inacio Lula da Silva and Senator Flavio Bolsonaro are statistically tied in a simulated runoff ahead of Brazil’s October 4 election, according to an AtlasIntel/Bloomberg poll. Bolsonaro led Lula 47.7% to 47.6%, reversing a September 23 result that showed Lula ahead 47.7% to 47.4%. In the first round, Lula received 45.3% support, followed by Bolsonaro at 42.2%, Renan Santos at 5.2% and Augusto Cury at 2%. The poll surveyed 5,005 people from September 23 to 28. If no candidate wins more than 50% of valid votes, Lula and Bolsonaro would advance to a runoff on October 25. The close national contest adds to existing signs of a tightening race, including weaker support for Lula in the northeast and prediction-market pricing that has reduced confidence in a first-round victory.