18.1. For the allocation of representatives by proportional representation, in the event that the situation foreseen in section VI of article 54 of the Constitution occurs, the following will be done:
a) Once the distribution mentioned in the previous article has been carried out, the rest of the seats in parliament will be allocated to the other political parties with the right to them, according to the following terms:
18.2. To allocate the representatives corresponding to each political party by multi-member regional electoral district, the procedure is as follows:
a) The effective vote by electoral district will be obtained. This is the result after deducting the votes cast for the political party or parties to which any of the limits established in sections IV or V of article 54 of the Constitution have been applied, in each one of the electoral districts;
b) The effective vote by electoral districts will be divided by the number of seats to be allocated in each multi-member regional electoral district in order to obtain the distribution ratio in each district;
c) The effective vote for each political party in each of the multi-member regional electoral district will be divided by the distribution ratio, and the result in whole numbers is the total number of representatives to be allocated in each multi-member regional electoral district, and
d) If some seats are left to be distributed to the political parties after applying the distribution ratio, the largest remainder of votes that each political party received in the electoral districts will be used, in descending order, until they are exhausted, so that each multi-member regional electoral district has forty representatives.