Columbia subject headings:
Campaign funds--United States--Congresses.
Political action committees--United States--Congresses.
Political parties--United States--Congresses.
Harvard subject headings:
Campaign funds--United States--Congresses.
Political action committees--United States--Congresses.
Political parties--United States--Congresses.
Princeton subject headings:
Campaign funds--United States--Congresses.
Political action committees--United States--Congresses.
Political parties--United States--Congresses.