Both government and market are the major realms of allocation of resources. Political economy deals with the relationship and dynamics between the political realm and economic realm. It discusses the role and function of government to regulate the market to serve various social purposes, such as justice and equality. This aspect of political economy includes redistribution, market failure, bureaucracy and regulatory bodies, and public finance, etc. Another aspect concerns about the influence of market on the government. It includes the politics of interest groups and lobbying, and other issues of state-market relationship.