What to know when Brazilians choose between Lula and Bolsonaro in the tense presidential round.

What to know when Brazilians choose between Lula and Bolsonaro in the tense presidential round.

Brazilians will choose between incumbent President Luiz Inacio Lula da Silva and Flavio Bolsonaro in Sunday's polarized presidential election, a contest that will determine whether the United States will significantly expand its growing influence in Latin America. Bolsonaro beat Lula by more than 2.2 million votes in the first round of elections held earlier this month, but neither candidate won an outright majority, leading to a second round on Sunday.