The Comparative Study of Electoral Systems (CSES) is a collaborative, cross-national program of comparative electoral behavior among over 60 election study teams from around the world. The CSES allows examination into how societal, political, economic and structural contexts shape citizen behavior and condition democratic choice; the nature of political and social divisions; and how citizens in different political systems evaluate democratic institutions and processes. Participating countries include a common module of survey questions in their post-election studies. The resulting data are deposited along with voting, demographic, district and macro variables. The studies are then merged into a single, free, public dataset for use in comparative study and cross-level analysis. The research agenda, questionnaires, and study design are developed by an international committee of leading scholars of electoral politics and political science. The design is implemented in each country by their foremost social scientists.
the GESIS - Leibniz Institute for the Social Sciences has included the datasets from CSES Modules 1, 2, and 3 into ZACAT, their data portal and online analysis tool. To use the online analysis tool, visit the Data Center on the CSES website. Within the page for each Module in the Data Center, there is a grey box with a link labeled "Analyze Online" which will take you to the ZACAT website. When you arrive at the ZACAT website, select the Module you wish to analyze from the box to the left, and then use the grey bar at the top of the page to manipulate the data.
CSES Module 1: 1996-2001;CSES Module 2: 2001-2006; CSES Module 3: 2006-2011; Cses MOdule 4 2011-2016; Cses Module 5 2016-2021. The free, integrated dataset, codebooks and further documents are available via GESIS data catalogue https://dbk.gesis.org/dbksearch/GDESC2.asp?no=0091&DB=E . Data is accessible as a text file and can be imported into SPSS or STATA software packages via prepared syntax files.