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Political science has witnessed a renaissance in qualitative research methods (Bennett and Elman 2006). Over the last 15 years, the canon has been reworked to systematize and expand the repertoire of qualitative methods, ground them more firmly in contemporary philosophy of science, and illuminate their strengths relative to quantitative and formal methods (Bennett and Elman 2007). A rapidly expanding body of political science research now employs qualitative and multi-method analysis, and institutions dedicated to qualitative and multi-method research have flourished.
Elman et al. (Fri,) studied this question.