Polity IV Project:
Political Regime Characteristics
and Transitions, 1800-2013
Monty G. Marshall, Director
Monty G. Marshall, Principal Investigator
Societal-Systems Research Inc.
Ted Robert Gurr, Founder
University of Maryland (Emeritus)
Polity IV Individual Country Regime Trends, 1946-2013
PLEASE NOTE: The Center for Systemic Peace (CSP) Web site has been reorganized and refreshed.
Annual Polity scores have been
plotted for each of the 167 countries currently covered by the Polity
IV data series for the period 1946-2013 (trend graphs are also included with the Polity
IV 2010 Country Reports). This version of the Polity Country Trend graphs display periods of "factionalism"
and important Polity change events, including autocratic backsliding,
executive auto-coup or autogolpe, revolution, collapse of central
authority (state failure), and successful military coups. Click on the country of interest in
the "Regimes by Type 2013" map directly below (or table following) to view
that country's contemporary regime trend (click here
for a explanatory guide to the Polity Country Trend graphs).