Columbia subject headings:
Harvard subject headings:
Elections--Portugal--History--20th century.
Elections--Portugal--History--21st century.
Political participation--Portugal--History--20th century.
Political participation--Portugal--History--21st century.
Political parties--Portugal--History--20th century.
Political parties--Portugal--History--21st century.
Portugal--Politics and government--1974-
Princeton subject headings:
Elections--Portugal--History--20th century.
Elections--Portugal--History--21st century.
Political participation--Portugal--History--20th century.
Political participation--Portugal--History--21st century.
Political parties--Portugal--History--20th century.
Political parties--Portugal--History--21st century.
Portugal--Politics and government--1974-