# Name Parties Matches
Manifesto Project 33 33
ParlGov 45 45
Wikipedia 86 86
CHES 26 26
CLEA 15 15
EJPR PDY 11 11
CHISOLS 32 32
DPI 13 13
ESS prtc* 29 29
ESS prtv* 32 32
Huber / Inglehart (1995) 8 8
Kitschelt (2013) 5 5
PolCon 17 17
PPMD (2006) 5 5
World Values Survey 4 4
CSES 11 11
EPAC (2018) 22 22
EP roll call votes 20 20
ERDDA (2013) 13 13
euandi (GPS) 4 4
Global Elections DB 14 14
IPOD 15 15
Jennings / Wlezien 8 8
KUREP (2012) 12 12
Latinobarometer 5 5
Laver / Hunt 9 9
Mackie / Rose (1991) 59 59
MAPP 17 17
Mudde (2007) 4 4
ParlSpeech 18 18
PIP 28 28
POPPA 11 11
PPDB (2017) 5 5
Ray (1999) 16 16
TAP 5 5
The PopuList 11 11
EES 2014 9 9