Niger

The legislative power is exercised by a unique chamber denominated [the] National Assembly whose members bear the title of Deputies.
… (Art. 83)

The Deputies are elected by universal, free, direct, equal and secret suffrage.
Nigeriens of the two (2) sexes, at least twenty-one (21) years old and enjoying their civil and political rights[,] are eligible to the National Assembly.
The lists of the political parties, of the groups of parties as well as those of the independent candidates must obligatorily include [compter], at least, 75% of [their] candidates holding, at least, the Brevet d'Etudes du Premier Cycle (BEPC), [Certificate of Studies of the First Cycle] or its equivalent and 25%, at most, of [their candidates] not fulfilling this condition.
Within this quota, the special circumscriptions are integrated within the regions to which they belong.
An organic law establishes the number of members of the National Assembly, the indemnity of the Deputies and the benefits [avantages], their conditions of eligibility, the regime of ineligibilities and of incompatibilities, the modality of the ballot as well as the conditions under which the vacancy of [a] seat of [a] Deputy is provided for. (Art. 84)