English Name
Time
Details from Source
PSI
Manifesto Project
ParlGov
Wikipedia
CHES
CLEA
Pasoit
Frdepo
EJPR PDY
V-Party
Wikipedia tags
CHISOLS
PSIU
PSIPSU
DPI
Socialists
Huber / Inglehart (1995)
PS
PolCon
So
LeSo
WhoGov
Elections Global
EU-NED
Global Elections DB
IPOD
ItSoPa
Laver / Hunt
Leaders Global
Mackie / Rose (1991)
MAPP
Morgan (1976)
PAGED
PIP
PPMD (all)
Ray (1999)
Thomas (1975)
EJS 2010
added: Jan. 31, 2013, 10:28 a.m. — updated: March 12, 2021, 11:15 a.m.