Abstract
Powersharing institutions are often prescribed to enhance civil peace, democratic survival, and the equitable provision of public services, and these institutions have become more prevalent over time. Nonetheless, the past decade has seen a rise in democratic backsliding and competitive authoritarianism, raising questions about how the relationship between powersharing, democracy, and civil peace may be evolving. This article introduces an update to the Inclusion, Dispersion, and Constraints (IDC) powersharing dataset that adds nine years of data, up through 2019. These new data include enhanced intercoder reliability checks, a significant reduction in missing values, and the documentation and correction of some coding errors in the original data. We also employ latent variable models to estimate each of three types of powersharing, allowing scholars to account for measurement uncertainty in analyses of the causes and consequences of powersharing. This dataset allows scholars to address urgent questions about whether previously observed relationships between powersharing and democracy and powersharing and civil peace still hold in this new era, and in what contexts powersharing institutions remain advisable.
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