Estimating the Policy Positions of Canadian Political Parties from Legislative Election Manifestos 1968-20081 by François Petry
[email protected] and Benoît Collette
[email protected] Centre for the Analysis of Public Policy (CAPP) Department of Political Science Laval University Quebec, QC, Canada G1K 7P4 Paper prepared for presentation at the Annual Congress of the Canadian Political Science Association, Carleton University, Ottawa, May 29, 2009. 1. Introduction This paper gives an overview of the Canadian party manifestos archived at Laval University under the auspices of the Poltext project, and illustrates how the content of these documents can be used in order to estimate the policy positions of the major political parties from the 1968 federal elections up to and including the 2008 federal elections. The paper has two main objectives: To show that the Comparative Manifesto Project (CMP) coding method enables a reliable and plausible estimation of Canadian party policy positions, and to compare our results with previous findings about Canadian party positions using similar CMP data from 1945 to 1980 (Irvine 1987). We conclude that, in spite of several methodological weaknesses, the possibility of comparison over time of substantive party positions gives CMP data an important advantage over alternative sources on party policy positions. 2. CMP Coding Procedure and Selection of Documents The Comparative Manifestos Project (CMP), formerly the Manifesto Research Project (MRP), endeavors to record the policy content of party manifestos on the basis of a common coding scheme which consists of 56 pre-established categories (see Volkens, 2001 for an overview and definitions of categories).