Columbia subject headings:
Biographies.
Legislators--United States--Biography.
Presidential candidates--United States--Biography.
Presidents--United States--Election--2020.
Progressivism (United States politics)
Sanders, Bernard.
Socialists--United States--Biography.
United States--Politics and government--2017-2021.
United States. Congress. Senate--Biography.
Harvard subject headings:
Princeton subject headings:
Legislators--United States--Biography.
Presidential candidates--United States--Biography.
Presidents--United States--Election--2020.
Progressivism (United States politics)
Sanders, Bernard.
Socialists--United States--Biography.
United States--Politics and government--2017-2021.
United States. Congress. Senate--Biography.