Data sources on elections (in general):
The PARLINE database on parliaments worldwide
Adam Carr’s archive on election results
ECPR’s Political Data Yearbook (elections in EU countries and a few other developed nations)
Election Ressources on the Internet
Survey data
Making Electoral Democracy Work (MEDW) project – In particular, pre-election and post-election data from 5 countries and different electoral arenas (national, subnational, and supranational).
Comparative Study of Electoral Systems
International Social Survey Programme
Data on political parties
Useful links on Central and Eastern Europe
Bulgaria
Czech Republic
Estonia
Hungary
Latvia
Lithuania
Poland
Romania
Slovakia
Slovenia
Useful links on other selected countries
Canada
Canadian Elections Database – Excellent website by Anthony Sayers, U. of Calgary.
Websites of some colleagues and co-authors:
André Blais, University of Montreal
Damien Bol, King’s College London
Ruth Dassonneville, University of Montreal
Alexander Morin-Chassé, University of Montreal
Jan Rovny, Sciences Po, Paris
Alexander Wuttke, University of Manheim
Filip Kostelka - Personal Website 