Nigeria's election by the numbers

Nigerians go to the polls on Saturday to elect a successor to President Muhammadu Buhari, who is stepping down after eight years at the helm of Africa's largest economy.

Candidates for the federal parliament -- the House of Representatives and Senate -- will also be on the ballot sheet.   

Governorship elections will take place on March 11 in most of the 36 states in the country, with voters also casting ballots for state lawmakers in all the states.  

Here's election day in 11 numbers: 

 18 candidates 
Of the 18 candidates vying for the presidency, analysts see three frontrunners:  

- Atiku Abubakar, 76, of the Peoples Democratic Party (PDP), the main opposition party. A former vice president, Abubakar is a perennial hopeful for the top job -- he ran in 2007 and 2009, and lost his party's primaries in 1993, 2011 and 2015. 

- Bola Tinubu, 70, of the ruling All Progressives Congress (APC). A former legislator and two-time governor of Lagos state, Tinubu is nicknamed "City Boy" and "the Godfather of Lagos" by supporters for his clout in Nigeria's economic capital.  

- Peter Obi, 61, of the Labour Party. The two-time governor of Anambra state in southeast Nigeria enjoys wide popularity among young voters. His supporters -- "OBIdients" -- are very popular on social media, declaring he is the only candidate who can turn the economy around. 

 87.2 million 
That's the number of people who have voting cards and are able to cast a ballot, according to the Independent National Electoral Commission (INEC), which is in charge of the election. Lagos state, in the southwest, has the highest number, with 7.06 million registered voters. Ekiti state, also in the southwest, has the lowest, with 987,647. 

 1,265,227 
INEC says it will need 707,384 presiding and assistant presiding officers, 17,685 supervisory presiding officers, 9,620 returning officers and 530,538 security officials to oversee the elections. 

 52.5 and 47.5 
Of the total number of eligible voters, 49,054,162 (52.5 percent) are male. Female voters constitute 47.5 percent, with 44,414,846.

 176,606 
Elections will be held in 176,606 polling units located in 8,809 registration areas or electoral wards in 774 local government areas nationwide.

 240 
Elections will not be held in 240 polling stations, mainly because of insecurity or because communities there have been displaced by violence.

 6 
Polling stations will be open for six hours, from 8:30 am to 2:30 pm. Voters who are still in the queue as of 2:30 pm will be allowed to go through and cast their ballots. 

 200,000  
Over 200,000 so-called bimodal voter accreditation systems (BVAS) are being deployed to verify voter identity through fingerprints or facial recognition to help combat fraud, corruption and tallying errors.

 14 
Under the 2022 Electoral Act, the returning officer for the presidential election has to officially confirm the result, in the form of a sealed certificate, within 14 days of the ballot.

 2/3 
To be declared winner of the presidential election, a candidate must have obtained the highest number of votes and must also win at least 25 percent of the ballots in at least two-thirds of the 36 states and Abuja.  

 21  
If none of the candidates meet the requirements, there will be a run-off between the two top candidates within 21 days, although this has never happened in Nigerian history.