English Name
Time
Details from Source
LO
ParlGov
Wikipedia
Luou
ESS prtc*
ESS prtv*
Huber / Inglehart (1995)
CSES-IMD
EP roll call votes
LO LCR
euandi (GPS)
EU-NED
Mackie / Rose (1991)
NPPSI
WS
EJS 2010
added: March 5, 2020, 8:26 p.m. — updated: March 12, 2021, 11:16 a.m.