Kay Lawson & Thomas Poguntke 
How Political Parties Respond [PDF ebook] 
Interest Aggregation Revisited

How Political Parties Respond focuses specifically on the question of interest aggregation. Do parties today perform that function? If so, how? If not, in what different ways do they seek to show themselves responsive to the electorate?
This fascinating book studies these questions with reference to Great Britain, France, Germany, Italy, Spain, Denmark, Norway, Sweden, and Canada. A chapter on Russia demonstrates how newly powerful private interest groups and modern techniques of persuasion can work together to prevent effective party response to popular interests in systems where the authoritarian tradition remains strong.