# Name Parties Matches
Manifesto Project 31 31
ParlGov 36 36
Wikipedia 53 53
CHES 12 12
CLEA 21 21
EJPR PDY 13 13
CHISOLS 14 14
DPI 22 22
Huber / Inglehart (1995) 10 10
Kitschelt (2013) 6 6
PolCon 17 17
PPMD (2006) 7 7
World Values Survey 8 8
CCS 14 14
CSES 25 25
EPAC (2018) 10 10
ERDDA (2013) 19 19
euandi (GPS) 9 9
Global Elections DB 13 13
Jennings / Wlezien 7 7
KUREP (2012) 10 10
MAPP 40 40
Mudde (2007) 2 2
PIP 17 17
POPPA 6 6
The PopuList 6 6
EES 2014 3 3