 Main presidential candidates MUHAMMADU BUHARI APC Embattled and determined leader Born in 1942 to a Muslim family in northern Katsina state Former soldier, led military regime in 1980s, remembered for strictness Tardy civil servants had to perform frog jumps in public Won 2015 presidential election, the first opposition candidate to defeat an incumbent, with promise to beat corruption and Boko Haram insurgents Told wife she belonged in kitchen after she complained in a BBC interview about his government After long absence from illness, had to deny rumours that he had been replaced in public by a lookalike Read full profile ATIKU ABUBAKAR PDP Tycoon and veteran power-broker Born in 1946 in northern state of Adamawa Co-owner of multinational oil services company that started life in a Lagos shipping container Oversaw privatisations during two terms as vice-president. 