Portugal - 1976 Constitution

Part IV - Safeguards and Revision of the Constitution - II - Revision of the Constitution
Title Article 290
Article

290

Laws revising this Constitutional shall respect:
i) Pluralism and expression in political organization, which shall include political parties and the right to democratic opposition;

Amendment Constitution: Article 288 (1989)
Categories - Democratic principles (Competition)
- Democratic principles (Pluralism)
Source Portuguese Electoral Commission (http://www.cne.pt)