# Name Parties Matches
Manifesto Project 11 11
Wikipedia 18 18
CHES 7 7
CLEA 12 12
CHISOLS 4 4
DPI 11 11
Kitschelt (2013) 5 5
PolCon 6 6
PPMD (2006) 8 8
World Values Survey 5 5
CCS 13 13
CSES 11 11
Global Elections DB 6 6
Janda (1980) 1 1
Mudde (2007) 3 3