English Name
Time
Details from Source
PNTCD
Manifesto Project
PNCD
ParlGov
Wikipedia
CLEA
EJPR PDY
V-Party
Wikipedia tags
DPI
ESS prtc*
ESS prtv*
Huber / Inglehart (1995)
PPMD (2006)
WhoGov
CSES-IMD
ERDDA (2013)
euandi (GPS)
EU-NED
KUREP (2012)
Leaders Global
PAGED
PIP
Poll of Polls
PPMD (all)
added: April 28, 2019, 5:59 p.m. — updated: March 12, 2021, 11:16 a.m.