Columbia subject headings:
Harvard subject headings:
Elections--Portugal--History.
Elections--Spain--History.
Portugal. Assembleia da República--History.
Spain. Cortes Generales--History.
Princeton subject headings:
Elections--Portugal--History--19th century.
Elections--Portugal--History--20th century.
Elections--Portugal--History.
Elections--Spain--History--19th century.
Elections--Spain--History--20th century.
Elections--Spain--History.
Portugal. Assembleia da República--History.
Spain. Cortes Generales--History.