# Name Parties Matches
Manifesto Project 17 17
ParlGov 27 27
Wikipedia 48 48
CHES 10 10
CLEA 8 8
EJPR PDY 11 11
CHISOLS 7 7
DPI 16 16
ESS prtc* 17 17
ESS prtv* 23 23
Huber / Inglehart (1995) 4 4
Kitschelt (2013) 5 5
PolCon 10 10
PPMD (2006) 6 6
CCS 8 8
CSES-IMD 11 11
EP roll call votes 6 6
ERDDA (2013) 12 12
euandi (GPS) 8 8
Global Elections DB 14 14
IPOD 13 13
Janda (1980) 1 1
Jennings / Wlezien 8 8
KUREP (2012) 6 6
Laver / Hunt 11 11
Mackie / Rose (1991) 18 18
MAPP 19 19
Mudde (2007) 2 2
PIP 12 12
POPPA 6 6
PPDB (2017) 6 6
Ray (1999) 13 13
TAP 7 7
The PopuList 4 4
EES 2014 7 7