Abstract
This article attempts to explain why the largest and most successful communist party in the West (the Italian Communist Party) has been the first to dissolve itself under the apparent impact of the revolutions in Eastern Europe. It does so by utilising and comparing four possible approaches to the study of West European Communist parties: ideological, electoral, strategic and ‘internal‐external’ approaches. The first three approaches are outlined and their limitations indicated before a more detailed exposition and application of the fourth approach is made as offering the most adequate framework to explain of one the most significant developments in Italian politics and West European communism.