28. While States parties generally hold the power to appoint women to senior cabinet and administrative positions, political parties also have a responsibility to ensure that women are included in party lists and nominated for election in areas where they have a likelihood of electoral success. States parties should also endeavour to ensure that women are appointed to government advisory bodies on an equal basis with men and that these bodies take into account, as appropriate, the views of representative women’s groups. It is the Government’s fundamental responsibility to encourage these initiatives to lead and guide public opinion and change attitudes that discriminate against women or discourage women’s involvement in political and public life. 29. Measures that have been adopted by a number of States parties in order to ensure equal participation by women in senior cabinet and administrative positions and as members of government advisory bodies include: adoption of a rule whereby, when potential appointees are equally qualified, preference will be given to a woman nominee; the adoption of a rule that neither sex should constitute less than 40 per cent of the members of a public body; a quota for women members of cabinet and for appointment to public office; and consultation with women’s organizations to ensure that qualified women are nominated for membership in public bodies and offices and the development and maintenance of registers of such women in order to facilitate the nomination of women for appointment to public bodies and posts. Where members are appointed to advisory bodies upon the nomination of private organizations, States parties should encourage these organizations to nominate qualified and suitable women for membership in these bodies. The right to hold public office and to perform all public functions (art. 7, para. (b)) 30. The examination of the reports of States parties demonstrates that women are excluded from top-ranking positions in cabinets, the civil service and in public administration, in the judiciary and in justice systems. Women are rarely appointed to these senior or influential positions and while their numbers may in some States be increasing at the lower levels and in posts usually associated with the home or the family, they form only a tiny minority in decision-making positions concerned with economic policy or development, political affairs, defence, peacemaking missions, conflict resolution or constitutional interpretation and determination. 31. Examination of the reports of States parties also demonstrates that in certain cases the law excludes women from exercising royal powers, from serving as judges in religious or traditional tribunals vested with jurisdiction on behalf of the State or from full participation in the military. These provisions discriminate against women, deny to society the advantages of their involvement and skills in these areas of the life of their communities and contravene the principles of the Convention. The right to participate in non-governmental and public and political organizations (art. 7, para. (c)) 32. An examination of the reports of States parties demonstrates that, on the few occasions when information concerning political parties is provided, women are underrepresented or concentrated in less influential roles than men. As political parties are an important vehicle in decision-making roles, Governments should encourage political parties to examine the extent to which women are full and equal participants in their activities and, where this is not the case, should identify the reasons for this. Political parties should be encouraged to adopt effective measures, including the provision of information, financial and other resources, to overcome obstacles to women’s full participation and representation and ensure that women have an equal opportunity in practice to serve as party officials and to be nominated as candidates for election.