# Name Parties Matches
Manifesto Project 17 17
ParlGov 38 38
Wikipedia 37 37
CHES 8 8
CLEA 38 38
EJPR PDY 21 21
DPI 13 13
ESS 11 11
Huber / Inglehart (1995) 5 5
PolCon 17 17
PPMD (2006) 6 6
CCS 11 11
CSES 13 13
ERDDA (2013) 18 18
Global Elections DB 11 11
IPOD 15 15
Janda (1980) 4 4
Jennings / Wlezien 8 8
Laver / Hunt 6 6
Mackie / Rose (1991) 29 29
MAPP 11 11
Morgan (1976) 7 7
PIP 16 16
The PopuList 7 7