# Name Parties Matches
Manifesto Project 24 24
ParlGov 30 30
Wikipedia 43 43
CHES 10 10
CLEA 21 21
EJPR PDY 20 20
CHISOLS 25 25
DPI 16 16
ESS 19 19
Huber / Inglehart (1995) 14 14
Kitschelt (2013) 6 6
PolCon 20 20
PPMD (2006) 9 9
World Values Survey 5 5
CCS 10 10
CSES 6 6
EPAC (2018) 7 7
ERDDA (2013) 19 19
euandi (GPS) 7 7
Global Elections DB 21 21
KUREP (2012) 6 6
MAPP 18 18
Mudde (2007) 6 6
PIP 18 18
POPPA 7 7
The PopuList 4 4
EES 2014 5 5