Elections are very important for the survival of representative democracy. They regulate competition over the exercise of power and consequently allow citizens to freely choose their representatives. Electoral engineering, through electoral cutting tools and the voting system, can make this competition more transparent. The specificity of each political power inspires these tools. A progressive political system, such as the case of Morocco, attempts to make them perfect whenever the political and social circumstances require it. The political history of Morocco, after independence, shows indeed this disposition of the Moroccan political system to progress on the path of democratization. The electoral system and the electoral division represent, among other things, elements that contribute to this democratic opening, especially after the year 2002. These two tools on which electoral engineering depends are constantly adapting, for the Moroccan case, with the socio-political demands that are more and more freed.