https://www.andrewteale.me.uk/leap/
Local Elections Archive Project
An archive of local election results in Great Britain since 2002. 2002-22 complete, 2023 onwards being worked on.
local electionsarchiveproject
https://www.icpsr.umich.edu/web/ICPSR/studies/118/export
Lijphart Elections Archive (LEA)
elections archivelea
https://aei.pitt.edu/94544/
European Parliament, June 1989 Elections - Archive of European Integration
european parliamentelections archivejuneintegration