The equal suffrage is one of the core international standards of democratic elections. This principle includes equality between men and women regarding the right to vote and the right to stand for elections. Nevertheless, in many member states of the Council of Europe and beyond an underrepresentation of women in Parliament is a matter of fact. Therefore, measures to improve the percentage of women in Parliament, especially by way of providing a minimum percentage of persons of each gender among candidates, have been widely discussed. In this line, the Code of Good Practice in Electoral Matters provides that “[l]egal rules requiring a minimum percentage of persons of each gender among candidates should not be considered as contrary to the principle of equal suffrage if they have a constitutional basis.”