Constitution of Kenya, 2010 (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. Amendment by parliamentary initiative. 256. (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. 155