
Nigerians are set to vote in presidential and parliamentary elections on Saturday that are seen as the most wide open since Africa's most populous nation switched from military rule to democracy in 1999.
Of the 18 candidates vying to succeed President Muhammadu Buhari, three stand a chance: former Lagos Governor Bola Tinubu, 70, the ruling party candidate; former Vice President Atiku Abubakar, 76, the main opposition candidate; Peter Obi, 61, a challenger popular among young voters.