Political Advertising on Google: .To help everyone understand the ads they see online, this report from Google includes information about verified advertisers, spending on ads related to elections.
Global Elections Database: .Information on the results of both national and subnational elections around the world.
Voting Technology Project Data: .seeks to develop better voting technologies, to improve election administration, and to deepen scientific research in these areas
Constituency-Level Elections Archive: .A repository of detailed election results at the constituency level for lower house legislative elections from around the world
Voter Turnout Database: .From the International Institute for Democracy and Electoral Assistance (IDEA)