Regional Commissio­ ners Act No.15 of 1984 Art.9 from time to time by the President. 61.-(1) There shall be a Regional Commissioner for each region within the United Republic who, subject to subarticle (3), shall be a leader in the Government of the United Republic. (2) Regional Commissioners in Mainland Tanzania shall be appointed by the President, after consultation with the Prime Minister. (3) Regional Commissioners in Tanzania Zanzibar shall be appointed by the President of Zanzibar, after consultation with the President. (4) Without prejudice to the provisions of subarticle (5), every Regional Commissioner shall have the duty to supervise the discharge of all the duties and functions of the Government of the United Republic in the region assigned to him and for that purpose, he shall discharge all duties and functions specified by or under any written law as being functions of a Regional Commissioner, and shall exercise all such powers specified by any law enacted by Parliament. (5) In addition to his duties and functions specified in the preceding provisions of this Article, a Regional Commissioner for any region in Tanzania Zanzibar shall discharge the duties and functions of the Revolutionary Government of Zanzibar which shall be assigned to him by the President of Zanzibar and in accordance with the Constitution of Zanzibar, 1984, or any law enacted by the House of Representatives. CHAPTER THREE THE LEGISLATURE OF THE UNTIED REPUBLIC PART I PARLIAMENT Parliament Act No.15 of 1984 Art.12 Authority of Parliament Act No.15 of 1984 Art.12 Act No.4 of 1992 Art.17 Act No.20 62.-(1) There shall be a Parliament of the Untied Republic which shall consist of two parts, that is to say, the President and the National Assembly. (2) The National Assembly shall consist of all categories of members specified in Article 66 of this Constitution, who shall all be designated as Members of Parliament. (3) Whenever any matter requires to be decided or done by both parts of Parliament in accordance with the provisions of this Constitution, or of any other law, then that matter shall not be taken to have been duly decided or done unless it is decided or done by the Members of Parliament and also by the President in accordance with their respective authority in relation to that matter. 63.-(1) The President as one part of Parliament shall exercise all the authority vested in him by this Constitution for that purpose. (2) The second part of Parliament shall be the principal organ of the United Republic which shall have the authority on behalf of the people to oversee and advise the Government of the United Republic and all its organs in the discharge of their respective responsibilities in accordance with this Constitution. (3) For the purposes of performing its functions, the National Assembly may ­ 41