A loyalist is a person who remains faithful and supportive to a particular cause, group or individual. They are dedicated supporters of a specific political party, movement, or leader, and often express their allegiance through actions such as voting, protesting, or participating in activities that promote the interests of their chosen side. Loyalists may also be referred to as "true believers" because they truly believe in the ideals and principles of their group, and are willing to defend them at any cost.