The purpose of this study was to describe the role of the PDI-P in the formulation of public policy in Kulon Progo 2010-2012. This research method is qualitative research. Data collection techniques used were interviews and documentation. Retrieval of data from these sources is snowball, which is derived from selected informants that in the perspective of researchers mengetahuiproses public policy formulation. Data analysis technique used is the technique of triangulation. The results of this study of the PDI-P, Kulon Progo Regency has a strategic role for the welfare of the people through various programs and building articulation of community interests. Factors that affect the role of the PDI-P Kulon Progo is a factor in the formulation of a strong party leadership as well as the solidity of the party organization. as the three pillars is a key player in the process of the emergence of public policy formulation. Each of these pillars has aspirations and authority, but in the unity of responsibilit