Nigeria

(1) Subject to the provisions of this Constitution, the executive powers of the Federation:
(a) shall be vested in the President and may, subject as aforesaid and to the provisions of any law made by the National Assembly, be exercised by him either directly or through the Vice-President and Ministers of the Government of the Federation or officers in the public service of the Federation;
… (Sec. 5)

A person shall be qualified for election to the office of the President if –
(a) he is a citizen of Nigeria by birth;
(b) he has attained the age of thirty-five years;
(c) he is a member of a political party and is sponsored by that political party; and
(d) he has been educated up to at least School Certificate level or its equivalent. (Sec. 131)

There shall be for the Federation a Vice-President. (Sec. 141)

(1) In any election to which the foregoing provisions of this Part of this Chapter⁸ relate, a candidate for an election to the office of President shall not be deemed to be validly nominated unless he nominates another candidate as his associate from the same political party for his running for the office of President, who is to occupy the office of Vice-President and that candidate shall be deemed to have been duly elected to the office of Vice-President if the candidate for an election to the office of President who nominated him as such associate is duly elected as President in accordance with the provisions aforesaid.
(2) The provisions of this Part of this Chapter relating to qualification for election, tenure of office, disqualification, declaration of assets and liabilities and oaths of President shall apply in relation to the office of Vice-President as if references to President were references to Vice-President. (Sec. 142)