The Party Mandate and the Westminster Model: Election Programmes and Government Spending in Britain, 1948–85

Do party manifestos matter to government policy? Does a genuine party mandate operate within the British political process? These questions are generally neglected in analyses of British politics, but they are crucial in assessing how far political parties transmit electoral preferences into government action. We try to answer them through a novel use of available data, using content analysis to code and classify policy emphases within the post-war election programmes of the Conservative, Labour and Liberal parties. Statistical analysis reveals that government party programmes are remarkably well reflected in post-election policy priorities, measured as percentages of central government spending in major policy areas. This gives strong support to traditional mandate theory within the context of the ‘Westminster model’ of party government. Anomalies, such as a strong relationship between Liberal emphases and expenditures in three key areas, and the more consistent relationship of expenditures with Conservative rather than Labour priorities, are also considered.