A wide range of actors who share a belief system about a policy area and over time demonstrate some degree of coordinated activities.
(Pal, 2006, p. 273)
The actors in an advocacy coalition can include government from all levels, officials, interest organizations, research groups, journalists, and even other countries.
Pal, L. (2006). Beyond Policy Analysis: Public Issue Management in Turbulent Times. Third Edition. Toronto: Nelson – Thomson.