Columbia subject headings:
Democratic Party (U.S.)
Republican Party (U.S. : 1854- )
United States--Politics and government--20th century.
Harvard subject headings:
Democratic Party (U.S.)
Republican Party (U.S. : 1854- )
United States--Politics and government--20th century.
Princeton subject headings:
Democratic Party (U.S.)
Republican Party (U.S. : 1854- )
United States--Politics and government--20th century.