Bhutanese citizens and not otherwise disqualified, and that membership not be based on region, sex, language, religion or social origin. Registration requires parties be broad-based with cross-national membership and support and be committed to national cohesion and stability. Members of all parties must declare allegiance to the constitution and uphold the sovereignty, security, and unity of the Kingdom. Furthermore, parties are required to advance democracy and the social, economic, and political growth of Bhutan. Parties are prohibited from receiving any money or assistance other than those contributions made by its registered members, and the value of such contributions is regulated by the Election Commission. Parties are prohibited from receiving any money or assistance from foreign sources, be it governmental, non-governmental, private organizations or from private parties or individuals. Political parties may be dissolved only by declaration of the Supreme Court. The Constitution establishes grounds for dissolution of political parties. If party objectives or activities are in contravention of the Constitution; if a party has received money or assistance from foreign sources; or if the Election Laws are violated, the Supreme Court may declare that party dissolved. Furthermore, Parliament may proscribe other laws with the effect of disqualifying political parties. Once dissolved, political parties may not comprise any members. Parliament regulates the formation, functions, ethical standards, and intra-party organization of political parties and regularly audits their accounts to ensure compliance with law. Article 16 delineates the rules of public campaign financing. Elections Article 23 defines the Constitutional requirements for elections in Bhutan. The Constitution calls for universal suffrage by secret ballot of all citizens over age 18 who have been registered in the civil registry of their constituency for at least one year and not "otherwise disqualified from voting under any law in force in Bhutan." In order to vote, Bhutanese citizens must furnish their Citizenship Card. Parliament makes, by law, provisions for all matters relating to, or in connection with, elections including the filing of election petitions challenging elections to Parliament and Local Governments, and the Code of Conduct for the political parties and the conduct of the election campaign as well as all other matters necessary for the due constitution of the Houses of Parliament and the Local Governments. In order to provide for informed choice by the voter, candidates for an elective office must file, along with a nomination, an affidavit declaring: the income and assets of candidates,