# Name Parties Matches
Manifesto Project 11 11
ParlGov 23 23
Wikipedia 23 23
CHES 9 9
CLEA 22 22
EJPR PDY 13 13
CHISOLS 12 12
DPI 7 7
ESS prtc* 12 12
ESS prtv* 12 12
Huber / Inglehart (1995) 9 9
Kitschelt (2013) 7 7
PolCon 12 12
PPMD (2006) 8 8
World Values Survey 10 10
CCS 8 8
CSES 10 10
ERDDA (2013) 11 11
Global Elections DB 8 8
IPOD 10 10
Jennings / Wlezien 7 7
Laver / Hunt 8 8
Mackie / Rose (1991) 16 16
MAPP 9 9
Morgan (1976) 8 8
PIP 9 9
POPPA 9 9
PPDB (2017) 7 7
Ray (1999) 8 8
TAP 3 3
The PopuList 6 6