The starting gun has been fired in Nigeria's presidential election with campaigning for the 16 February poll officially starting on Sunday.

In just under an hour, Atiku Abubakar the main challenger to President Muhammadu Buhari will launch his campaign with the slogan "Get Nigeria working again".

The All Progressives Congress says that while its "foundational work is not often visible" or "glamorous" it has done the groundwork for "a strong, stable and prosperous country".

There are more than 70 other candidates registered with the electoral commission.