Flavio Bolsonaro and Lula are tied in the polls in a Datafolha poll ahead of Brazil's runoff election. The final debate focused on living costs and corruption, with both candidates targeting undecided voters. Taylor Swift's influence is also drawing attention, with pop fans potentially supporting Lula's campaign. Voting security is a concern as Brazil's rapid count comes before the US midterms. Trump's presence is also impacting the Brazilian election.