# Name Parties Matches
ParlGov 30 30
Manifesto Project 14 14
ERDDA (2013) 14 14
Morgan (1976) 13 13
Mackie / Rose (1991) 22 22
CHES 11 11
EJPR PDY 12 12
Kitschelt (2013) 8 8
KUREP (2012) 8 8
Huber / Inglehart (1995) 9 9
EPAC (2018) 9 9
Ray (1999) 13 13
PPMD (2006) 8 8
CLEA 27 27
World Values Survey 11 11
EES 2014 8 8
PolCon 15 15
CHISOLS 5 5
DPI 9 9
Jennings / Wlezien 6 6
Wikipedia 30 30
Global Elections DB 10 10
Laver / Hunt 11 11
euandi (GPS) 10 10
Elections Global 15 15
EP roll call votes 7 7
IPOD 12 12
MAPP 10 10
CSES-IMD 9 9
CCS 10 10
PIP 13 13
Mudde (2007) 1 1
The PopuList 3 3
V-Party 17 17
POPPA 9 9
TAP 4 4
GPD 1 1
PPMD (all) 14 14
ESS prtc* 22 22
ESS prtv* 23 23
GPS 2019 9 9
Leaders Global 8 8
PPEPE (2021) 1 1