a person who believes in or supports democracy 民主主义者 - Democrat(abbreviation D, Dem.)
a member or supporter of the Democratic Party of the US （美国）民主党党员，民主党人，民主党支持者 see also social democracy
Word Originlate 18th cent. (originally denoting an opponent of the aristocrats in the French Revolution of 1790): from French démocrate, on the pattern of aristocrate ‘aristocrat’.