From the vast field of issues (Agenda Universe), groups push issues meriting public attention "within the legitimate jurisdiction of existing governmental authority" (Birkland, quoting Cobb and Elder), moving to the next level (Systemic Agenda). Ideas that gain active and serious consideration of decision/policy makers go the next level (Institutional Agenda). If acted upon, it reaches Decision Agenda—the last level in the policy making process. Within these levels there are push and pull actions that happen between and among interest groups in order to pursue or challenge such initiatives.
