Thinktanks

https://ideas.blogs.nytimes.com/2008/08/10/think-tanks/

http://www.pewresearch.org/fact-tank/2014/08/08/chart-of-the-week-the-most-liberal-and-conservative-big-cities/

http://www.npr.org/sections/ombudsman/2011/04/22/134229266/what-to-think-about-think-tanks

http://fair.org/extra/fair%E2%80%88study-think-tank-spectrum-2012/