Brazil's far-right candidate Jair Bolsonaro was less than 5 points away from winning the first round. He'll face Fernando Haddad, the left's stand-in for ex-President Luiz Inácio Lula da Silva, on October 28. 

Social media is driving the conversation—and a wedge between genders—in this year's presidential vote.

On October 7, Brazilians will elect 27 governors and 567 members of Congress. We look at those competitions and top voter issues.