Public opinion is not spontaneous; it is organised. Parties collect demands from social groups, unions and communities and frame them into coherent platforms. Through manifestos, spokespersons and issue-based campaigns they simplify complex policies and present alternatives. During elections and between them, parties run meetings, padyatras, door-to-door canvassing and digital outreach that popularise certain narratives. In legislatures, they raise questions, propose bills and highlight scandals, all of which receive media attention and influence what citizens consider important. Party think-tanks produce data and surveys to test messages. Internal democracy and responsible communication improve quality of opinion, while demagoguery and misinformation can distort it. Thus parties act as key intermediaries between society and state in opinion formation.