# Name Parties Matches
Manifesto Project 25 25
ParlGov 63 63
Wikipedia 60 60
CHES 22 22
CLEA 12 12
EJPR PDY 20 20
CHISOLS 39 39
DPI 12 12
ESS 26 26
Huber / Inglehart (1995) 12 12
Kitschelt (2013) 7 7
PolCon 34 34
PPMD (2006) 9 9
CSES 12 12
EPAC (2018) 12 12
ERDDA (2013) 13 13
euandi (GPS) 10 10
Global Elections DB 16 16
IPOD 18 18
Janda (1980) 5 5
KUREP (2012) 9 9
Laver / Hunt 7 7
Mackie / Rose (1991) 31 31
MAPP 15 15
Morgan (1976) 18 18
Mudde (2007) 4 4
PIP 16 16
POPPA 13 13
PPDB (2017) 2 2
Ray (1999) 12 12
The PopuList 6 6
EES 2014 5 5
Thomas (1975) 9 9