STORY: Tinubu, a former governor of Lagos state, will take over leadership of a country grappling with Islamist insurgencies in the northeast, armed attacks, killings and kidnappings, conflict between livestock herders and farmers, cash, fuel and power shortages, and perennial corruption that opponents say outgoing Muhammadu Buhari's party has failed to stamp out, despite promises to do so.
The Independent National Electoral Commission (INEC) said Tinubu garnered 8.79 million votes, ahead of main opposition challenger Atiku Abubakar's 6.98 million votes.
Peter Obi, an outsider popular with younger voters, garnered 6.1 million votes.
Nigerian electoral law says a candidate can win by getting more votes than their rivals, provided they get 25% of the vote in at least two-thirds of the 36 states and the federal capital Abuja, which Tinubu did.
Opposition parties rejected the results as the product of a flawed process, which suffered multiple technical difficulties owing to the introduction of new technology by INEC, and on Tuesday (February 28) called on its chairman, Mahmood Yakubu, to resign.