# Name Parties Matches
Manifesto Project 55 55
ParlGov 86 86
Wikipedia 86 86
CLEA 47 47
EJPR PDY 35 35
CHISOLS 46 46
DPI 21 21
ESS prtc* 35 35
ESS prtv* 39 39
Kitschelt (2013) 9 9
PolCon 23 23
PPMD (2006) 12 12
World Values Survey 5 5
CSES 29 29
Global Elections DB 25 25
Laver / Hunt 7 7
Mackie / Rose (1991) 51 51
MAPP 12 12
Morgan (1976) 22 22
PPDB (2017) 10 10