Measuring Parties’ Ideological Positions with Manifesto data: A Critical Evaluation of the Competing Methods
Party Politics, 2010, 16, 4, 427-450
DINAS, Elias, GEMENIS, Kostas, Measuring Parties’ Ideological Positions with Manifesto data: A Critical Evaluation of the Competing Methods, Party Politics, 2010, 16, 4, 427-450 - https://hdl.handle.net/1814/14958
Retrieved from Cadmus, EUI Research Repository
Within the rapidly growing literature on positioning political parties along policy dimensions, the rich data series collected by the Comparative Manifestos Project (CMP) has been widely considered as the most systematic and objective source of information. For estimating parties’ positions on the Left–Right dimension alone, several different methods have been proposed which make use of the CMP data. However, unless a new method is proposed, there will seldom be any attempt to check the robustness of the findings across different measurement strategies. In this article, we focus on the parties in Greece, which have been notoriously incorrectly positioned by the ‘standard’ method proposed by the CMP. We contrast the ‘standard’ method with various proposed alternatives and show that the latter outperform the former both in terms of face and convergent validity and in terms of reliability. In addition, we show that this cross-checking is essential, since different methods often lead to diametrically opposite results.
Cadmus permanent link: https://hdl.handle.net/1814/14958
Full-text via DOI: 10.1177/1354068809343107
Keyword(s): ideology left-right party manifestos reliability validity
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