Change in Source of Leader Support (CHISOLS) Data

The “Change in Source of Leader Support” (CHISOLS) data is a collaborative effort by Brett Ashley Leeds (Rice University) and Michaela Mattes (University of California, Berkeley). The data collection was supported by National Science Foundation grant SES-0921781 "Collaborative Research: Interests, Institutions, and Foreign Policy Change."

The goal of the CHISOLS data is to differentiate leader transitions in which a new leader comes to office who depends on different societal groups for support than their predecessor from leader transitions where both the current leader and their predecessor rely on essentially the same groups for support.

The data cover all countries with a population of more than 500,000 between 1919-2018. CHISOLS is available in two formats, one with the state-year as unit of analysis, and one with the leader as unit of analysis. The current release is version 5.0.

In addition to a link to download the data, you will find a detailed user's manual, narratives describing coding decisions for all cases, and a master bibliography on this site.
 
Please cite the data as:
Mattes, Michaela, Brett Ashley Leeds, and Naoko Matsumura. 2016. Measuring Change in Source of Leader Support: The CHISOLS Dataset. Journal of Peace Research 53(2): 259-267.  (available here)
 
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