Politics: Finding Think Tanks

No matter what your issue, some research group is studying it, bloviating about it, and attempting to influence policy-makers and the public. Allow for the biases -- there's always a bias -- and these organizations can provide useful sources of information -- newsletters, backgrounders, policy briefs, surveys, op-ed pieces, etc. -- and sometimes even be a source of money for your own projects. Here are some listings:

-> Directory of Think Tanks (Kennedy School of Government, Harvard)
-> Political Resources: Think Tanks (University of Michigan Documents Center)
-> Think Tanks (Hillwatch.com: "A directory of Canadian and International Think Tanks")
-> Think Tanks and N.G.O.s (Worldpress.Org)
-> World Directory of Think Tanks (National Institute for Research Advancement, Japan)