# Name Parties Matches
Manifesto Project 28 28
ParlGov 47 47
Wikipedia 55 55
CHES 17 17
CLEA 37 37
EJPR PDY 18 18
CHISOLS 16 16
DPI 11 11
ESS prtc* 21 21
ESS prtv* 20 20
Huber / Inglehart (1995) 9 9
Kitschelt (2013) 9 9
PolCon 23 23
PPMD (2006) 9 9
World Values Survey 11 11
CCS 10 10
CSES 13 13
EP roll call votes 12 12
ERDDA (2013) 28 28
euandi (GPS) 12 12
Global Elections DB 13 13
IPOD 23 23
Janda (1980) 6 6
Jennings / Wlezien 12 12
KUREP (2012) 11 11
Laver / Hunt 10 10
Mackie / Rose (1991) 37 37
MAPP 20 20
Morgan (1976) 20 20
Mudde (2007) 5 5
ParlSpeech 17 17
PIP 26 26
POPPA 13 13
PPDB (2017) 11 11
Ray (1999) 13 13
TAP 7 7
The PopuList 10 10
EES 2014 9 9