Polls close, Bolsonaro takes lead in Brazil election

STORY: With 20% of electronic voting machines counted, Bolsonaro was ahead with 48% of the votes against 43% for Lula, the national electoral authority said on its website.

Most opinion polls have shown Lula with a 10-15 percentage point lead, but Bolsonaro has signaled he may refuse to accept defeat, stoking fears of institutional crisis. If Lula wins over 50% of valid votes, which several pollsters show within reach, he would clinch an outright victory, foregoing a run-off.

If no candidate wins over half of the votes, excluding blank and spoiled ballots, the top two go to an Oct. 30 run-off.