Columbia subject headings:
Political science--United States--History.
Presidents--United States--Election--History.
Presidents--United States--Election.
Presidents--United States--Nomination--History.
Harvard subject headings:
Political science--United States--History
Presidents--United States--Election--History
Presidents--United States--Nomination--History.
Princeton subject headings:
Political science--United States--History.
Presidents--United States--Election--History.
Presidents--United States--Nomination--History.