# 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 40 40
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