democrat
Refers to a person who supports democracy or is a member of a democratic political party. Often used in political contexts.
He is a passionate democrat.
民主主義者 is the standard, more formal Japanese term for a democrat, while デモクラット is a Western-style loanword that sounds more casual or specifically evokes US/European political contexts.
Used for counting people (デモクラット), sounding formal and natural in contexts like seating or reservations.
Loanword from English 'democrat'.