# Name Parties Matches
Manifesto Project 29 29
ParlGov 49 49
Wikipedia 39 39
CHES 21 21
CLEA 33 33
EJPR PDY 32 32
CHISOLS 14 14
DPI 25 25
ESS prtc* 12 12
ESS prtv* 12 12
Huber / Inglehart (1995) 7 7
Kitschelt (2013) 6 6
PolCon 15 15
PPMD (2006) 13 13
World Values Survey 16 16
CSES 15 15
EPAC (2018) 10 10
ERDDA (2013) 17 17
euandi (GPS) 10 10
Global Elections DB 12 12
Jennings / Wlezien 7 7
KUREP (2012) 6 6
MAPP 16 16
Mudde (2007) 2 2
PIP 18 18
POPPA 10 10
TAP 7 7
The PopuList 12 12
EES 2014 9 9