Brazil election authority: Former President Lula da Silva tops 1st round; heads to runoff vs. incumbent Bolsonaro
With 90% of votes tallied, ex-President Lula da Silva leads slightly, but Brazil appears headed to run-off vote
With 52% of Brazil votes tallied, far-right incumbent Bolsonaro has a slight lead over ex-President Lula da Silva
Polls open in Brazil for election that could return a leftist president after four years of far-right politics