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CSES - Integrated Module Dataset (IMD)

The CSES Integrated Module Dataset (IMD) brings together selected variables from CSES Modules 1-5 into one longitudinal and harmonized dataset. Variables that appear in at least three CSES Modules, up to and including CSES Module 5, are eligible for inclusion in IMD. All polities that have participated in CSES Modules 1-5 are included in the dataset.

CSES IMD includes over 395,000 individual-level observations across 230 elections in 59 polities, as well as voter evaluations of over 800 parties. Among several unique innovations of CSES IMD are the harmonization of party/coalition numerical codes within polities across CSES Modules, the creation of a pre-coded incumbent vote choice variable and political information indexes, extensive macro data over 25 years, and within-dataset labels for all parties/coalitions. CSES IMD launched in December 2018 and is being rolled out on a phased basis with the latest release, Phase 4 released in February 2024.

Data of the CSES IMD are available free of charge via GESIS data catalogue.

Module 1 Module 2 Module 3 Module 4 Module 5
Albania   2005     2017
Argentina       2015  
Australia 1996 2004 2007 2013 2019
Austria     2008 2013 2017
Belarus 2001   2008    
Belgium 1999*, 1999* 2003     2019*,2019*
Brazil   2002 2006, 2010 2014 2018
Bulgaria   2001   2014  
Canada 1997 2004 2008 2011, 2015 2019
Chile 1999 2005 2009   2017
Costa Rica         2018
Croatia     2007    
Czechia* 1996 2002 2006, 2010 2013 2017, 2021
Denmark 1998 2001 2007   2019
El Salvador         2019
Estonia     2011    
Finland   2003 2007, 2011 2015 2019
France   2002 2007 2012 2017
Germany 1998 2002*, 2002* 2005, 2009 2013 2017, 2021
Great Britain 1997 2005   2015 2017, 2019
Greece     2009 2012, 2015 2015, 2019
Hong Kong 1998, 2000 2004 2008 2012 2016
Hungary 1998 2002     2018
Iceland 1999 2003 2007, 2009 2013 2016, 2017
India         2019
Ireland   2002 2007 2011 2016
Israel 1996 2003 2006 2013 2020
Italy   2006     2018
Japan 1996 2004 2007 2013 2017
Kenya       2013  
Kyrgyzstan   2005      
Latvia     2010 2011, 2014 2018
Lithuania 1997       2016, 2020
Mexico 1997, 2000 2003 2006, 2009 2012, 2015 2018
Montenegro       2012 2016
Netherlands 1998 2002 2006, 2010   2017, 2021
New Zealand 1996 2002 2008 2011, 2014 2017, 2020
Norway 1997 2001 2005, 2009 2013 2017
Peru 2000, 2001 2006 2011 2016 2021
Philippines   2004 2010 2016  
Poland 1997 2001 2005, 2007 2011 2019
Portugal 2002* 2002*,2005 2009 2015 2019
Romania 1996 2004 2009 2012, 2014 2016
Russia 1999*,2000* 2004      
Serbia       2012  
Slovakia     2010 2016 2020
Slovenia 1996 2004 2008 2011  
South Africa     2009 2014  
South Korea 2000 2004 2008 2012 2016
Spain 1996, 2000 2004 2008    
Sweden 1998 2002 2006 2014 2018
Switzerland 1999 2003 2007 2011 2019
Taiwan 1996 2001, 2004 2008 2012 2016, 2020
Thailand 2001   2007 2011 2019
Tunisia         2019
Turkey     2011 2015 2018
Ukraine 1998        
United States 1996 2004 2008 2012 2016, 2020
Uruguay     2009   2019

* Belgium 1999: Two election studies were run in Belgium in 1999 – one in Belgium-Flanders, and one in Belgium-Walloon.

* Belgium 2019: Two election studies were run in Belgium in 2019 – one in Belgium-Flanders, and one in Belgium-Walloon.

* Czechia: In July 2016, the Czech government officially changed the polity’s name from Czech Republic to Czechia. The polity is listed as “Czech Republic” in CSES Modules 1-4, and as “Czechia” as of CSES Module 5.

* Germany 2002: Two election studies were run in Germany in 2002 – one was a telephone study, and one was a mail-back study.

* Portugal 2002: The Portugal 2002 election study occurred during the transition between Module 1 and Module 2, and included both modules.

* Russia 1999 and 2000: These two years were a panel study, with 1999 being for the parliamentary election and 2000 being for the presidential election.