Zambia

1. There shall be a President of the Republic who shall be the Head of State and Government and Commander-in-Chief of the Defence Force.
2. The executive authority of the State vests in the President and, subject to this Constitution, shall be exercised directly by the President or through public officers or other persons appointed by the President.
3. The President shall, in exercise of the executive authority of the State—
a. respect, uphold and safeguard this Constitution;
...
e. promote and protect the rights and freedoms of a person; and
f. uphold the rule of law. (Art. 91)

1. The electoral systems provided for in Article 47 for the election of President, Member of Parliament or councillor shall ensure—
a. that citizens are free to exercise their political rights;
b. universal adult suffrage based on the equality of a vote;
c. fair representation of the various interest groups in society;
... (Art. 45)

1. A person qualifies to be nominated as a candidate for election as President if that person—
a. is a citizen by birth or descent;
b. has been ordinarily resident in Zambia;
c. is at least thirty-five years old;
d. is a registered voter;
e. has obtained, as a minimum academic qualification, a grade twelve certificate or its equivalent;
f. is fluent in the official language;
g. has paid that person’s taxes or has made arrangements, satisfactory to the appropriate tax authority, for the payment of the taxes;
h. declares that person’s assets and liabilities, as prescribed;
i. pays the prescribed election fee on, or before, the date fixed for the delivery of nomination papers; and
j. is supported by at least one hundred registered voters from each Province.
... (Art. 100)

1. A President shall be elected by registered voters in accordance with Article 47 (1) and this Article.
2. The Returning Officer shall declare the presidential candidate who receives more than fifty percent of the valid votes cast during the election as President-elect.
3. If at the initial ballot a presidential candidate does not receive more than fifty percent of the valid votes cast, a second ballot shall be held within thirty-seven days of the initial ballot, where the only candidates shall be the presidential candidates who obtained—
a. the highest and second highest number of valid votes cast in the initial ballot; or
b. an equal number of the valid votes cast in the initial ballot, being the highest votes amongst the presidential candidates that stood for election to the office of President.
... (Art. 101)