In this rich and broad-ranging volume, Giovanni Sartori outlines what is now recognised to be the most comprehensive and authoritative approach to the classification of party systemsIn this rich and broad-ranging volume, Giovanni Sartori outlines what is now recognised to be the most comprehensive and authoritative approach to the classification of party systems. He also offers an extensive review of the concept and rationale of the political party, and develops a sharp critique of various spatial models of party competition. This is political science at its best combining the intelligent use of theory with sophisticated analytic arguments, and grounding all of this on a substantial cross-national empirical base. Parties and Party Systems is one of the classics of postwar political science, and is now established as the foremost work in its field.contentsTables and Figures viiAbbreviations ixNew preface by the author xiIntroduction by Peter Mair xiiiPrefacexxiPART ONE: THE RATIONALE: WHY PARTIES?1Chapter one: The party as part31. From faction to party32. Pluralism123. Responsible and responsive government164. A rationalisation21Chapter two: The party as whole351. No-party versus one-party352. The party-state system383. One-party pluralism42Chapter three: The preliminary framework501. Channelment, communication, expression502. The minimal definition523. An overview57Chapter four: The party from within631. Fractions, factions, and tendencies632. A scheme of analysis663. Southern politics: Factions without parties?724. Italy and Japan: Fractions within parties785. The structure of opportunities826. From party to faction92PART TWO: PARTY SYSTEMSChapter five: The numerical criterion1051. The issue1052. Rules for counting1073. A two-dimensional mapping110Chapter six: Competitive systems1161. Polarised pluralism1162. Testing the cases1283. Moderate pluralism and segmented societies1544. Twoparty systems1645. Predominant-party systems171Chapter seven: Non-competitive syl“p