Issues in relation to which referendums are optional at the national level
São Tomé and Príncipe
Answer
Any issue of national importance, except those excluded
Source
Constituição da RepúblicaDemocr?tica de S?o Tom? e Pr?ncipe
(Adopted in 1990)
http://www.wipo.int/wipolex/en/text.jsp?file_id=180006
Article71(2).
