These are democracy data for all Correlates of War state system members.
Format
A data frame with 18289 observations on the following 5 variables.
gwcodethe Gleditsch-Ward system code
yeara numeric vector for the year
v2x_polyarchythe Varieties of Democracy "polyarchy" estimate
polity2the the
polity2score from the Polity projectxm_qudsestan extension of the Unified Democracy Scores (UDS) estimates, made possibly by the
QuickUDSpackage from Xavier Marquez.
Details
Missing data connote data that are unavailable for various reasons. Either there is no democracy data to code or, in the case of the Polity project, the state system member is outright not evaluated for the variable.
The Polity data are from 2017. The Varieties of Democracy data are version 10. Xavier Marquez' QuickUDS estimates (i.e. extensions of Pemstein et al. (2010)) come from a package Marquez makes available on his Github (https://github.com/xmarquez/QuickUDS).
References
Coppedge, Michael, John Gerring, Carl Henrik Knutsen, Staffan I. Lindberg, Jan Teorell, David Altman, Michael Bernhard, M. Steven Fish, Adam Glynn, Allen Hicken, Anna Luhrmann, Kyle L. Marquardt, Kelly McMann, Pamela Paxton, Daniel Pemstein, Brigitte Seim, Rachel Sigman, Svend-Erik Skaaning, Jeffrey Staton, Agnes Cornell, Lisa Gastaldi, Haakon Gjerlow, Valeriya Mechkova, Johannes von Romer, Aksel Sundtrom, Eitan Tzelgov, Luca Uberti, Yi-ting Wang, Tore Wig, and Daniel Ziblatt. 2020. "V-Dem Codebook v10" Varieties of Democracy (V-Dem) Project.
Marshall, Monty G., Ted Robert Gurr, and Keith Jaggers. 2017. "Polity IV Project: Political Regime Characteristics and Transitions, 1800-2017." Center for Systemic Peace.
Marquez, Xavier, "A Quick Method for Extending the Unified Democracy Scores" (March 23, 2016). doi: 10.2139/ssrn.2753830
Pemstein, Daniel, Stephen Meserve, and James Melton. 2010. "Democratic Compromise: A Latent Variable Analysis of Ten Measures of Regime Type." Political Analysis 18(4): 426-449.