Columbia subject headings:
Courtesy--United States.
Partisanship.
Political culture--United States.
Political parties--United States.
Right and left (Political science)--United States.
United States. Congress.
Harvard subject headings:
Courtesy--United States.
Partisanship.
Political culture--United States.
Political parties--Unied States.
Political parties--United States
Right and left (Political science)--United States.
United States. Congress.
Princeton subject headings:
Courtesy--United States.
Partisanship.
Political culture--United States.
Political parties--Unied States.
Right and left (Political science)--United States.
United States. Congress