Columbia subject headings:
Elections--Demographic aspects--United States.
Political campaigns--United States--History--21st century.
Presidents--United States--Election--2012.
Voting--United States--Religious aspects.
Harvard subject headings:
Elections--United States--Demographic aspects.
Political campaigns--United States--History--21st century.
Presidents--United States--Election--2012.
Voting--United States--Religious aspects.
Princeton subject headings:
Elections--United States--Demographic aspects.
Political campaigns--United States--History--21st century.
Presidents--United States--Election--2012.
Voting--United States--Religious aspects.