Australian Election Study (AES)
http://aes.anu.edu.au/

Austrian National Election Study (AUTNES)
http://www.autnes.at/

British Election Study (BES)
http://www.essex.ac.uk/bes/ and the new website:
http://bes2009-10.org/

Canadian Election Study
http://ces-eec.mcgill.ca/

Danish election project
http://www.valgprojektet.dk/default.asp?l=eng

Dutch Parliamentary Election Study (DPES)
http://www.dpes.nl/

Hungarian Election Study (only in Hungarian)
http://www.valasztaskutatas.hu/

Irish National Election Study (INES)
http://www.tcd.ie/ines/

Israel National Election Studies (INES)
http://www.ines.tau.ac.il/elections.html

Italian National Election Study (ITANES)
http://www.itanes.org/

New Zealand Election Study (NZES)
http://www.nzes.org/

Portuguese Election Study
http://www.cep.ics.ul.pt/pages/en/initial-page.php

Swedish National Election Studies (SNES)
http://www.valforskning.pol.gu.se/english/

Swiss Electoral Studies (SELECTS)
http://www2.unil.ch/selects/?lang=en

American National Election Study (ANES)
http://www.electionstudies.org/

European Election Studies (EES)
http://www.ees-homepage.net/

Providing an Infrastructure for Research on Electoral Democracy in the European Union (PIREDEU)
http://www.piredeu.eu/

The European Voter
http://www.gesis.org/en/services/data-analysis/survey-data/international...

The True European Voter
http://true-european-voter.eu