Nigerians vote for new president in closely fought election

Nearly 90 million people are eligible to vote in the poll, which is unfolding as Africa's most populous democracy grapples with a security crisis, a sluggish economy and widening poverty.

For the first time in Nigeria's modern history, a third candidate has emerged to challenge the ruling All Progressives Congress (APC) and main opposition Peoples Democratic Party (PDP).

With Buhari stepping down after two terms in office, the APC's Bola Tinubu, 70, a former Lagos governor and political kingmaker, says "It's my turn" for the presidency.

He faces a familiar rival -- PDP candidate and former vice president Atiku Abubakar, 76, who is on his sixth bid for the top job.

But the emergence of a surprise third candidate appealing to young voters, Labour Party's Peter Obi, 61, has thrown the race open for the first time since the end of military rule in 1999.

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Nearly 10 million new voters registered this year, most of them under 34, representing an important bloc if they come out to vote.

"It is not as easy to predict as before," said Kano State College public affairs lecturer Kabiru Sufi.

"It's difficult for us to make an easy prediction as to what is going to be the likely outcome."

Cash and fuel shortages in the days before the election have also left many Nigerians angry and struggling more than usual in a country already hit by more than 20 percent inflation.

"This coming government should try and correct all the wrongs that this administration and other administrations have made," said Lagos vendor Blessing Asabe, 37.

"That is why this election is very important for whoever we decide to choose."

Voters will also cast their ballot for Nigeria's two houses of parliament, the National Assembly and Senate.