# Name Parties Matches
Manifesto Project 15 15
Wikipedia 22 22
CLEA 18 18
CHISOLS 1 1
DPI 16 16
Kitschelt (2013) 6 6
PolCon 14 14
PPMD (2006) 8 8
World Values Survey 4 4
EPAC (2018) 6 6
Global Elections DB 9 9
KUREP (2012) 7 7