Strengths and weaknesses of the author's assumptions and/or biases

This article examines the estimation value of the three major advances to approximating principle places of parties: professional reviews, the accepted content investigation of election programs by the Manifesto Research Group/Comparative Manifestos Project, and computer-assisted content investigation of election programs.

Based on a publications reconsider in tabular pattern encompassing quotations organised as asserted by foremost estimation difficulties, this assistance talks about the deserves and shortcomings of the three approaches. The methodical evaluation displays that all three advances have their specific power and weaknesses. As a direct, the power of one approach is ...