Kenyan Constitution, Chapter Sixteen, Article 255 to 257

Amendments to the constitutions
Article 255: Amendment of this Constitution
(1) A proposed amendment to this Constitution shall be enacted in accordance with Article 256 or 257, and approved in accordance with clause (2) by a referendum, if the amendment relates to any of the following matters––
(a) the supremacy of this Constitution;
(b) the territory of Kenya;
(c) the sovereignty of the people;
(d) the national values and principles of governance referred to in Article 10 (2) (a) to (d);
(e) the Bill of Rights;
(f) the term of office of the President;
(g) the independence of the Judiciary and the commissions and independent offices to which Chapter Fifteen applies;
(h) the functions of Parliament;
(i) the objects, principles and structure of devolved government; or
(j) the provisions of this Chapter.
(2) A proposed amendment shall be approved by a referendum under clause (1) if––
(a) at least twenty per cent of the registered voters in each of at least half of the counties vote in the referendum;
and
(b) the amendment is supported by a simple majority of the citizens voting in the referendum.
(3) An amendment to this Constitution that does not relate to a matter specified in clause (1) shall be enacted either–
(a) by Parliament, in accordance with Article 256; or
(b) by the people and Parliament, in accordance with Article 257.
Article 256: Amendment by parliamentary initiative
(1) A Bill to amend this Constitution–
(a) may be introduced in either House of Parliament;
(b) may not address any other matter apart from consequential amendments to legislation arising from the Bill;
(c) shall not be called for second reading in either House within ninety days after the first reading of the Bill in that House; and
(d) shall have been passed by Parliament when each House of Parliament has passed the Bill, in both its second and third readings, by not less than two-thirds of all the members of that House.
(2) Parliament shall publicise any Bill to amend this Constitution, and facilitate public discussion about the Bill.
(3) After Parliament passes a Bill to amend this Constitution, the Speakers of the two Houses of Parliament shall jointly submit to the President–
(a) the Bill, for assent and publication; and
(b) a certificate that the Bill has been passed by Parliament in accordance with this Article.
(4) Subject to clause (5), the President shall assent to the Bill and cause it to be published within thirty days after the Bill is enacted by Parliament.
(5) If a Bill to amend this Constitution proposes an amendment relating to a matter specified in Article 255 (1)–
(a) the President shall, before assenting to the Bill, request the Independent Electoral and Boundaries Commission to conduct, within ninety days, a national referendum for approval of the Bill; and
(b) within thirty days after the chairperson of the Independent Electoral and Boundaries Commission has certified to the President that the Bill has been approved in accordance with Article 255 (2), the President shall assent to the Bill and cause it to be published.
Article 257: Amendment by popular initiative
(1) An amendment to this Constitution may be proposed by a popular initiative signed by at least one million registered voters.
(2) A popular initiative for an amendment to this Constitution may be in the form of a general suggestion or a formulated draft Bill.
(