Atiku Abubakar, the presidential candidate of the Peoples Democratic Party, PDP, and his wife, Titi Abubakar have cast their vote.
Atiku performed his civic right at about 9:11 am at his polling unit in Adamawa State.
While thumb-printing on his ballot paper, some people circled him to see his vote.
Atiku is one of the frontrunners to succeed President Muhammadu Buhari on May 29.
Others vying for the seat of the president include, Bola Tinubu of the All Progressives Congress, APC, Peter Obi of the Labour Party, LP, and Rabiu Kwankwaso of the New Nigeria Peoples Party, NNPP.