In the final days of Brazil's presidential campaign, President Luiz Inácio Lula da Silva has alleged that the camp of his rival, Flavio Bolsonaro, is encouraging foreign interference. The election pits the leftist incumbent against the son of former far-right president Jair Bolsonaro, who was convicted of staging a coup.
Washington has backed closer ties with Brazil's right wing, raising questions about US influence, trade tariffs, organised crime and Brazil's sovereignty, according to the BBC.
Sunday's vote is also a test for a growing pro-Trump Latin American bloc. After his recent speech to the United Nations General Assembly, Donald Trump boasted that right-wing candidates he endorsed had won all seven presidential elections held in the region since he began his second term. He spoke to a dozen like-minded Latin American leaders, most of them members of the Shield of the Americas, an anti-drug cartel coalition of 15 countries governed by the right or far right.
Polls show a tight race between Lula and Flavio Bolsonaro, with concerns over crime and the economy dominating voter concerns, according to reporting from Al Jazeera and The Guardian.