After reviewing existing literature on party government, this article
identifies the main information gaps regarding this topic. St points o
ut the most important elements that a systematic study on government-p
arty relationships cannot overlook. The underlying question the author
asks is who, in fact, governs in modern Western democracies-ruling pa
rties or national executives? To answer this question, the author esta
blishes a series of institutional variables, such as form of governmen
t, type of party and electoral system, among others. Next, depending o
n these characteristics, he constructs a typology on the forms that th
e government-party relationship can assume in terms of the greater or
lesser autonomy of the former vis-a-vis the latter. Most of the study
is devoted to suggesting an analytical strategy allowing for a compara
tive study on the topic.