# Name Parties Matches
Manifesto Project 30 30
ParlGov 42 42
Wikipedia 39 39
CHES 19 19
CLEA 45 45
EJPR PDY 23 23
CHISOLS 27 27
DPI 25 25
ESS 26 26
Huber / Inglehart (1995) 9 9
Kitschelt (2013) 12 12
PolCon 29 29
PPMD (2006) 11 11
CCS 17 17
CSES 13 13
EPAC (2018) 13 13
ERDDA (2013) 22 22
euandi (GPS) 12 12
Global Elections DB 24 24
IPOD 21 21
Jennings / Wlezien 8 8
KUREP (2012) 13 13
Laver / Hunt 11 11
Mackie / Rose (1991) 33 33
MAPP 19 19
Morgan (1976) 12 12
Mudde (2007) 5 5
PIP 21 21
POPPA 13 13
PPDB (2017) 12 12
Ray (1999) 15 15
The PopuList 5 5
EES 2014 12 12