Electoral system for national legislature

Constitution 1988 (last amended in 2015)

​ART 45. The Chamber of Deputies is composed of representatives of the people, elected in each State, Territory and the Federal District by a proportional system.

1. The total number of Deputies, as well as the representation of each State and the Federal District, shall be established by complementary law in proportion to the population. The necessary adjustments shall be made in the year prior to the elections, so that none of the units of the Federation has fewer than eight nor more than seventy Deputies.

2. Each territory shall elect four Deputies.