Turnout was low in the capital, Bujumbura, and one province but 16 other provinces had a good level of voters, said the head of Burundi's electoral commission Claver Ndayicariye. Results are expected in two days, he said.
With some of the opposition boycotting the election and others charging that they were not allowed to campaign, Nkurunziza, 51, is not facing a strong electoral challenge.