Zimbabwe

The President is the Head of State and Government and the Commander-in-Chief of the Defence Forces. (Sec. 89)

(1) The President must uphold, defend, obey and respect this Constitution as the supreme law of the nation and must ensure that this Constitution and all the other laws are faithfully observed.
… (Sec. 90)

(1) A person qualifies for election as President or appointment as Vice-President if he or she—
(a) is a Zimbabwean citizen by birth or descent;
(b) has attained the age of forty years;
(c) is ordinarily resident in Zimbabwe; and
(d) is registered as a voter.
… (Sec. 91)

(1) A person qualifies for election as President or appointment as Vice-President if he or she—
(a) is a Zimbabwean citizen by birth or descent;
(b) has attained the age of forty years;
(c) is ordinarily resident in Zimbabwe; and
(d) is registered as a voter.
… (Sec. 91)

…
(2a) As soon as the President assumes office, he or she shall appoint not more than two persons to be Vice-Presidents, who shall be persons qualified for election as President in terms of section 91(1), and who shall take, before the Chief Justice or the next most senior judge available, the oath of a Vice-President in the form set out in the Third Schedule.
... (Sec. 94)

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(2) The executive authority of Zimbabwe vests in the President who exercises it, subject to this Constitution, through the Cabinet. (Sec. 88)

(1) The President appoints Ministers and assigns functions to them, including the administration of any Act of Parliament or of any Ministry or department, but the President may reserve to himself or herself the administration of an Act, Ministry or department.
(2) The President may appoint Deputy Ministers to assist any Minister in the exercise of his or her functions.
(3) Ministers and Deputy Ministers are appointed from among Senators or Members of the National Assembly, but up to seven, chosen for their professional skills and competence, may be appointed from outside Parliament.
(4) In appointing Ministers and Deputy Ministers, the President must be guided by considerations of regional and gender balance.
… (Sec. 104)

Parliament consists of the Senate and the National Assembly. (Sec. 118)

(1) The Senate consists of eighty Senators, of whom—
(a) six are elected from each of the provinces into which Zimbabwe is divided, by a system of proportional representation conforming with subsection (2);
(b) sixteen are Chiefs, of whom two are elected by the provincial assembly of Chiefs from each of the provinces, other than the metropolitan provinces, into which Zimbabwe is divided;
(c) the President and Deputy President of the National Council of Chiefs; and
(d) two are elected in the manner prescribed in the Electoral Law to represent persons with disabilities.
(2) Elections of Senators must be conducted in accordance with the Electoral Law, which must ensure that the Senators referred to in subsection (1)(a) are elected under a party-list system of proportional representation—
(a) which is based on the votes cast for candidates representing political parties in each of the provinces in the general election for Members of the National Assembly; and
(b) in which male and female candidates are listed alternately, every list being headed by a female candidate. (Sec. 120)

(1) A person is qualified for election as a Senator referred to in section 120(1)(a) or (d) if he or she—
(a) is registered as a voter; and
(b) is at least forty years of age;
unless he or she is disqualified under subsection (4) or (5).
(2) A person is qualified for election as a Senator Chief referred to in section 120(1)(b) if he or she—
(a) holds the office of Chief; and
(b) is registered as a voter;
unless he or she is disqualified under subsection (4) or (5).
… (Sec. 121)

(1) The National Assembly consists of—
(a) two hundred and ten members elected by secret ballot from the two hundred and ten constituencies into which Zimbabwe is divided; and
(b) for the life of the first four Parliaments after the effective date, an additional sixty women members, six from each of the provinces into which Zimbabwe is divided, elected through a system of proportional representation based on the votes cast for candidates representing political parties in a general election for constituency members in the provinces.
(c) a further additional ten youth members, that is, persons aged from twenty-one to thirtyfive years of age, one from each of the provinces into which Zimbabwe is divided, elected under a party-list system of proportional representation—
(i) which is based on the votes cast for candidates representing political parties in a general election for constituency members in the provinces; and
(ii) in which male and female candidates are listed alternately:
Provided that political parties must ensure that—
(a) ten of the sixty women members are under the age of thirty-five;
(b) women with disabilities are represented on their party lists; and
(c) young women with disabilities are represented on their party lists in terms of an Act of Parliament.
… (Sec. 124)

(1) A person is qualified for election as a Member of the National Assembly if he or she—
(a) is registered as a voter; and
(b) is at least twenty-one years of age;
unless he or she is disqualified under subsection (2) or (3).
… (Sec. 125)

(1) The proceedings of the Senate and the National Assembly are regulated by rules known as Standing Orders, which are made by the Houses individually or jointly on the recommendation of the Committee on Standing Rules and Orders.
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(4) Any committee established by or under Standing Orders must reflect, as closely as possible, the political and gender composition of Parliament or of the House to which the Standing Orders apply. (Sec. 139)

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(3) Members must be appointed or elected to the Committee on Standing Rules and Orders as soon as possible after the beginning of the first session of each Parliament, and they must be selected so that the committee reflects as nearly as possible the political and gender composition of the combined Houses of Parliament.
… (Sec. 151)

(1) An Act of Parliament must provide for the conduct of elections and referendums to which this Constitution applies, and in particular for the following matters—
…
(d) a system of proportional representation for the election of persons to the seats in the Senate referred to in section 120(1)(a) and the seats reserved for women in the National Assembly referred to in section 124(1)(b), and the procedure for filling vacancies in those seats, which vacancies must be filled by persons—
(i) belonging to the same political parties as those who previously held the seats; and
(ii) of the same gender as the persons who previously held the seats;
…
(2) The system of proportional representation provided for in terms of subsection (1)(d) must ensure equal representation of women among the Senators referred to in section 120(1)(a).
… (Sec. 157)