English Name
Time
Details from Source
NPD
ParlGov
Wikipedia
CHES
DVU NPD
CLEA
NaPaDe
EJPR PDY
ESS prtc*
ESS prtv*
Kitschelt (2013)
PPMD (2006)
CSES-IMD
euandi (GPS)
EU-NED
Laver / Hunt
Mackie / Rose (1991)
ADF
MAPP
Poll of Polls
PPMD (all)
TAP
NPPSI
NDPG
added: July 13, 2019, 10:07 p.m. — updated: March 12, 2021, 11:16 a.m.