Columbia subject headings:
Mass media--Political aspects--United States.
Obama, Barack.
Political campaigns--United States.
Presidents--United States--Election--2012.
United States--Politics and government--2012-
Harvard subject headings:
Obama, Barack
Performance art--Political aspects--United States.
Presidents--United States--Election--2012.
United States--Politics and government--2009-2017.
Princeton subject headings:
Obama, Barack.
Presidents--United States--Biography.