Agenda building is the process by which policy agendas of political elites are influenced by media, public, and other factors. There are three main agendas: media agenda which focuses on issues frequently and prominently covered in news, public agenda which are issues viewed as most important by the public, and policy agenda which are top priority issues for political leaders. Media agenda can influence policy agenda if an issue receives excessive media coverage, though the relationship between the three agendas is complex. Media coverage can also be divided into spheres of legitimate controversy, consensus, and deviation which affect how freely an issue is reported on.