A think tank conducts research and often makes policy recommendations. Think tanks often have a political perspective (right or left), but may also describe themselves as non partisan. Keep this in mind and evaluate your results!
The Harvard Kennedy School offers a custom Google search of more than 690 think tanks and research centers.
The think tanks in this search were culled from the University of Pennsylvania's "Global Go-To Think Tanks" rating index.
Non-partisan research organizations include:
Elections around the World
This site contains international electoral information, such as dates and party information.
International Organizations
League of Arab States (Arab League)
Political Science Organizations
The American Political Science Association
A mix of blogs and online news sources from non-partisan, left and right perspectives. Warning: The information in these blogs may have varying degrees of accuracy. Use the CRAAP test to evaluate the information you find.
Guardian's Blogs (U.K newspaper)