Constitution of Kenya
90. Allocation of party list seats
(1) Elections for the seats in Parliament provided for under Articles 97(1) (c) and 98 (1) (b), (c) and (d), and for the members of county assemblies under 177 (1) (b) and (c), shall be on the basis of proportional representation by use of party lists.
(2) The Independent Electoral and Boundaries Commission shall be responsible for the conduct and supervision of elections for seats provided for under clause (1) and shall ensure that--
(a) each political party participating in a general election nominates and submits a list of all the persons who would stand elected if the party were to be entitled to all the seats provided for under clause (1), within the time
prescribed by national legislation;
(b) except in the case of the seats provided for under Article 98 (1) (b), each party list comprises the appropriate number of qualified candidates and alternates between male and female candidates in the priority in which they
are listed; and
(c) except in the case of county assembly seats, each party list reflects the regional and ethnic diversity of the people of Kenya.
(3) The seats referred to in clause (1) shall be allocated to political parties in proportion to the total number of seats won by candidates of the political party at the general election.