# Name Parties Matches
Manifesto Project 14 14
ParlGov 29 29
Wikipedia 31 31
CHES 11 11
CLEA 27 27
EJPR PDY 12 12
CHISOLS 5 5
DPI 9 9
ESS 21 21
Huber / Inglehart (1995) 10 10
Kitschelt (2013) 8 8
PolCon 15 15
PPMD (2006) 8 8
World Values Survey 11 11
CCS 10 10
CSES 9 9
EPAC (2018) 9 9
ERDDA (2013) 14 14
euandi (GPS) 10 10
Global Elections DB 10 10
IPOD 12 12
Jennings / Wlezien 6 6
KUREP (2012) 8 8
Laver / Hunt 11 11
Mackie / Rose (1991) 22 22
MAPP 10 10
Morgan (1976) 12 12
Mudde (2007) 1 1
PIP 13 13
POPPA 9 9
Ray (1999) 13 13
The PopuList 3 3
EES 2014 8 8