В этом контексте.

Are you having problems managing information about your organization’s donors, supporters, members, volunteers, and other constituents? If so, you’re not alone.

“Constituent” refers to ALL people with some relationship to the organization - donors, funders, volunteers, clients and all other people who help an organization to achieve its mission or are benefactors of the mission.

http://www.idealware.org/articles/relationship_centric_org.p...