Home > 4.3 Regional and federate elections > MEXICO - General Law on Electoral Institutions and Procedures of Mexico
 
 
 
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Article 28
 

28.1. The number of representatives in the legislatures of the States will be proportional to the inhabitants in each; but, in any event, there cannot be less than seven representatives in states with a population of less than 400 thousand inhabitants; less than nine in those with a population higher than this number but less than 800 thousand inhabitants, and eleven in the States with a population higher than the last number.


28.2. A political party cannot under any circumstances have a number of representatives through both principles which represents a percentage of the total of the legislature which exceeds by eight points the percentage of the cast votes it received. This base does not apply to the political parties that because of their success in single-member districts obtain a percentage of seats of the total of the legislature that is higher than the sum of its percentage of the cast votes plus eight percent. In order to recognize and guarantee the representation and plurality of the political forces that compete in the state, the allocation of local representatives by proportional representation will be done in accordance with the following:


d) [The political party that obtains three percent of the validly cast votes in the respective elections will be allocated one seat by the principle of proportional representation, independently of the single-member districts it may have won, and] This portion has been declared unconstitutional by ruling 22/2014 of the Supreme Court.


e) [Once the previous distribution has been done, the remaining seats by proportional representation will be allocated in accordance with the formula established in the local laws.] This portion has been declared unconstitutional by ruling 22/2014 of the Supreme Court.


f) In the integration of the legislature, the percentage of representation of a political party cannot be less than the percentage of the votes that it received minus eight percentage points. In any case, the formula will establish the rules for the deduction of the number of representatives by proportional representation necessary to allocate representatives to the political parties that find themselves in this situation of greater or smaller underrepresentation. [This formula will be applied once one representative by proportional representation has been allocated to all political parties that obtained the minimum percentage of votes to preserve their registration in accordance with the electoral regulations. ] This portion has been declared unconstitutional by ruling 22/2014 of the Supreme Court.