English Name
Time
Details from Source
PPDPSD
Manifesto Project
PSD
ParlGov
Wikipedia
CHES
PPD PSD
CLEA
Papode
Partido social democrta
EJPR PDY
V-Party
Wikipedia tags
CHISOLS
DPI
PPD
ESS prtc*
ESS prtv*
Huber / Inglehart (1995)
Kitschelt (2013)
PPMD (2006)
WhoGov
CCDD 2018
CCS
Elections Global
EP roll call votes
ERDDA (2013)
EU-NED
Global Elections DB
PaPoDeSoDe
IPOD
SoDePa
Jennings / Wlezien
SD
KUREP (2012)
Laver / Hunt
Leaders Global
MAPP
PAGED
PIP
ADPSD
Poll of Polls
POPPA
PPDB (2017)
PPMD (all)
Ray (1999)
EES 2014
PaSoDePS
CeDeSoPoCoPSCD
Schlager / Weisblatt
EJS 2000
added: Aug. 28, 2019, 8:47 p.m. — updated: March 12, 2021, 11:15 a.m.