source_file,source,items,observations,party_years,parties,countries,min_year,max_year
expert.csv,CHES,2,2639,1320,390,44,1999,2024
expert.csv,GPS,2,538,271,271,62,2019,2019
expert.csv,POPPA,1,413,413,225,31,2018,2023
expert.csv,V-Party,7,21488,3076,589,65,1970,2019
lr_data.csv,CHES,1,1320,1320,390,44,1999,2024
lr_data.csv,Morgan,1,471,471,72,11,1945,1973
lr_data.csv,POPPA,1,416,416,225,31,2018,2023
text_data.csv,Manifesto Project,8,36008,4501,713,65,1920,2025
text_data.csv,PolDem,9,2194,406,93,15,1972,2017