# Name Parties Matches
Manifesto Project 11 11
ParlGov 22 22
Wikipedia 20 20
CHES 9 9
CLEA 12 12
EJPR PDY 11 11
CHISOLS 5 5
DPI 16 16
ESS 7 7
PolCon 8 8
PPMD (2006) 8 8
World Values Survey 7 7
ERDDA (2013) 10 10
euandi (GPS) 8 8
Global Elections DB 5 5
MAPP 5 5
Mudde (2007) 1 1
PIP 7 7
POPPA 8 8
The PopuList 3 3
EES 2014 6 6