ARTICLE 76
The Constitution may be amended by process of legislation. But acts of the National Assembly relating to the amendment of the Constitution are effective only if two-thirds of the legal membership are present, and at least two-thirds of those present give their assent. Acts of the National Council relating to the amendment of the Constitution also require a two-thirds majority of all the votes cast. If an amendment to the Constitution is to be adopted by the People by popular initiative, the assent of a majority of the qualified voters is required.
If the National Assembly adopts an amendment to the Constitution against the objection of the National Council, the President may not promulgate this law, if the National Council within two weeks demands a popular vote.