# Name Parties Matches
Manifesto Project 17 17
ParlGov 30 30
Wikipedia 38 38
CHES 11 11
CLEA 18 18
EJPR PDY 10 10
CHISOLS 8 8
DPI 6 6
ESS prtc* 18 18
ESS prtv* 14 14
Huber / Inglehart (1995) 5 5
Kitschelt (2013) 6 6
PolCon 12 12
PPMD (2006) 6 6
CCS 6 6
CSES 7 7
EP roll call votes 9 9
ERDDA (2013) 11 11
euandi (GPS) 6 6
Global Elections DB 9 9
IPOD 10 10
Janda (1980) 3 3
Jennings / Wlezien 5 5
KUREP (2012) 7 7
Laver / Hunt 7 7
Mackie / Rose (1991) 25 25
MAPP 8 8
Mudde (2007) 1 1
PIP 15 15
POPPA 10 10
PPDB (2017) 5 5
Ray (1999) 9 9
TAP 3 3
The PopuList 5 5
EES 2014 5 5