189. (1) The Governor or Deputy Governor of a State shall cease to hold office if
(a) by a resolution passed by two-thirds majority of all members of the executive council of the State, it is
declared that the Governor or Deputy Governor is incapable of discharging the functions of his office; and
(b) the declaration in paragraph (a) of this subsection is verified, after such medical examination as may be
necessary, by a medical panel established under subsection (4) of this section in its report to the speaker of the
House of Assembly.
(2) Where the medical panel certifies in its report that in its opinion the Governor or Deputy Governor is
suffering from such infirmity of body or mind as renders him permanently incapable of discharging the functions
of his office, a notice thereof signed by the Speaker of the House of Assembly shall be published in the Official
Gazette of the Government of the State.
(3) The Governor or Deputy Governor shall cease to hold office as from the date of publication of the notice of
the medical report pursuant to subsection (2) of this section.
(4) The medical panel to which this section relates shall be appointed by the Speaker of the House of Assembly
of the State, and shall comprise five medical practitioners in Nigeria (a) one of whom shall be the personal physician of the holder of the office concerned; and
(b) four other medical practitioners who have, in the opinion of the Speaker of the House of Assembly, attained a
high degree of eminence in the field of medicine relative to the nature of the examination to be conducted in
accordance with the foregoing provisions of this section.
(5) In this section, the reference to "executive council of the State" is a reference to the body of Commissioners
of the Government of the State, howsoever called, established by the Governor and charged with such
responsibilities for the functions of Government as the Governor may direct.
190. Whenever the Governor transmits to the Speaker of the House of Assembly a written declaration that he is
proceeding on vacation or that he is otherwise unable to discharge the functions of his office, until he transmits
to the Speaker of the House of Assembly a written declaration to the contrary such functions shall be discharged
by the Deputy Governor as Acting Governor.
191. (1) The Deputy Governor of a State shall hold the office of Governor of the State if the office of Governor
becomes vacant by reason of death, resignation, impeachment, permanent incapacity or removal of the governor
from office for any other reason in accordance with section 188 or 189 of this constitution.
(2) Where any vacancy occurs in the circumstances mentioned in subsection (1) of this section during a period
when the office of Deputy Governor of the State is also vacant, the Speaker of the House of Assembly of the
State shall hold the office of Governor of the State for a period of not more than three months, during which
there shall be an election of a new Governor of the State who shall hold office for the unexpired term of office of
the last holder of the office.
(3) Where the office of the Deputy Governor becomes vacant (a) by reason of death, resignation, impeachment, permanent incapacity or removal in accordance with section
188 or 189 of this Constitution;
(b) by his assumption of the office of Governor of a State in accordance with subsection (1) of this section; or
(c) for any other reason, the Governor shall nominate and with the approval of the House of Assembly of the
State, appoint a new Deputy Governor.
192. (1) There shall be such offices of Commissioners of the Government of a State as may be established by the
Governor of the State
(2) Any appointment to the office of Commissioner of the Government of a State shall, if the nomination of any
person to such office is confirmed by the House of Assembly of the State, be made by the Governor of that State
and in making any such appointment the Governor shall conform with the provisions of section 14(4) of this
Constitution.
(3) Where a member of a House of Assembly or of the National Assembly is appointed as Commissioner of the
Government of a State, he shall be deemed to have resigned his membership of the House of Assembly or of the
National Assembly on his taking the Oath of office as Commissioner.