Columbia subject headings:
Local elections--United States--Maps.
Maps.
Political parties--United States--History--Maps.
United States--Election districts--Maps.
United States--History.
United States--Politics and government.
Harvard subject headings:
Princeton subject headings:
Election districts--United States--Maps.
Local elections--United States--Maps.
Maps.
Political parties--United States--History--Maps.
United States--History.
United States--Politics and government.