Amendments to the Constitution. Adoption of a New Constitution
Article 153. The National Assembly shall be free to amend all provisions of the Constitution except those within the prerogatives of the Grand National Assembly.
(2) An amendment bill shall be debated by the National Assembly not earlier than one month and not later than three months from the date on which it is introduced.
(2) A bill which has received less than three-fourths but more than two-thirds of the votes of all Members shall be eligible for reintroduction after not fewer than two months and not more than five months. To be passed at this new reading, the bill shall require a majority of two-thirds of the votes of all Members.
Article 156. An amendment to the Constitution shall be signed and promulgated in Durzhaven Vestnik by the Chairman of the Grand National Assembly within seven days following its passage.
Article 157. A Grand National Assembly shall consist of 400 Members elected by the generally established procedure.
Article 158. A Grand National Assembly shall: 1. adopt a new Constitution; 2. resolve on any changes in the territory of the Republic of Bulgaria and ratify any international instrument envisaging such a change. 3. resolve on any changes in the form of state structure or form of government. 4. resolve on any amendment to Article 5 paras 2 and 4 and Article 57 paras 1 and 3 of this Constitution; 5. resolve on any amendment to Chapter Nine of the Constitution.
(2) The draft of a new constitution or a proposed amendment to the existing Constitution, and any bill to introduce a change in the territory of the country pursuant to Article 158 shall be debated by the National Assembly not earlier than two months and not later than five months from the date on which it is introduced.
(2) The President shall schedule the elections for a Grand National Assembly within three months from the passage of the National Assembly's resolution.
(3) The mandate of the National Assembly shall expire with the holding of the elections for a Grand National Assembly.
Article 161. To pass a bill, the Grand National Assembly shall require a majority of two- thirds of the votes of all Members, in three ballots on three different days.
(3) The prerogatives of a Grand National Assembly shall expire after it resolves on all matters for which it has been elected. The President shall then schedule elections by a procedure established by a law.
Article 163. An act of the Grand National Assembly shall be signed and promulgated in Durzhaven Vestnik by the Assembly's Chairman within seven days following its passage.