Columbia subject headings:
Democratic Party (U.S.)--History.
Political parties--United States--History.
Republican Party (U.S. : 1854- )--History.
Harvard subject headings:
Democratic Party (U.S.)--History.
Democratic Party--History.
Political parties--United States--History
Republican Party (U.S. : 1854- )--History.
Two-party systems--United States--History.
Princeton subject headings:
Democratic Party (U.S.)--History.
Political parties--United States--History.
Republican Party (U.S. : 1854- )--History.