# Name Parties Matches
Manifesto Project 26 26
Wikipedia 23 23
CHES 5 5
CLEA 10 10
CHISOLS 9 9
DPI 16 16
Kitschelt (2013) 5 5
PolCon 11 11
PPMD (2006) 10 10
World Values Survey 14 14
EPAC (2018) 13 13
Mudde (2007) 5 5
Parties-PostYug 20 20