San Marino
8 October 1600; electoral law of 1926 serves some of the
functions of a constitution
Sao Tome and Principe
approved March 1990, effective 10 September
1990
Saudi Arabia
governed according to Islamic law; the Basic Law that
articulates the government's rights and responsibilities was
promulgated by royal decree in 1992
Senegal
adopted 7 January 2001
Serbia
adopted 8 November 2006; effective 10 November 2006
Seychelles
18 June 1993
Sierra Leone
1 October 1991; amended several times
Singapore
3 June 1959; amended 1965 (based on pre-independence State
of Singapore Constitution)
Sint Maarten
Staatsregeling, 10 October 2010; revised Kingdom
Charter pending
Slovakia
ratified 1 September 1992, effective 1 January 1993;
changed in September 1998; amended February 2001
note: the change in September 1998 allowed direct election of the
president; the amendment of February 2001 allowed Slovakia to apply
for NATO and EU membership