Constitution:
11 October 1972; major reforms adopted 1978, 1983, 1994, and 2004
Legal system:
based on civil law system; judicial review of legislative acts in the Supreme Court of Justice; accepts compulsory ICJ jurisdiction with reservations
Suffrage:
18 years of age; universal and compulsory
Executive branch:
chief of state: President Martin TORRIJOS Espino (since 1 September 2004); First Vice President Samuel LEWIS Navarro (since 1 September 2004); Second Vice President Ruben AROSEMENA Valdes (since 1 September 2004); note - the president is both the chief of state and head of government head of government: President Martin TORRIJOS Espino (since 1 September 2004); First Vice President Samuel LEWIS Navarro (since 1 September 2004); Second Vice President Ruben AROSEMENA Valdes (since 1 September 2004) cabinet: Cabinet appointed by the president elections: president and vice presidents elected on the same ticket by popular vote for five-year terms (not eligible for immediate reelection; president and vice presidents must sit out two additional terms (10 years) before becoming eligible for reelection); election last held 2 May 2004 (next to be held on 3 May 2009); note - beginning in 2009, Panama will have only one vice president election results: Martin TORRIJOS Espino elected president; percent of vote - Martin TORRIJOS Espino 47.5%, Guillermo ENDARA Galimany 30.6%, Jose Miguel ALEMAN 17%, Ricardo MARTINELLI 4.9% note: government coalition - PRD (Democratic Revolutionary Party), PP (Popular Party)
Legislative branch:
unicameral National Assembly or Asamblea Nacional (78 seats; members are elected by popular vote to serve five-year terms); note - in 2009, the number of seats will change to 71 elections: last held 2 May 2004 (next to be held 3 May 2009) election results: percent of vote by party - NA; seats by party - PRD 41, PA 17, PS 9, MOLIRENA 4, CD 3, PLN 3, PP 1 note: legislators from outlying rural districts are chosen on a plurality basis while districts located in more populous towns and cities elect multiple legislators by means of a proportion-based formula