Using a combination of case studies, data analysis, and real-life experience, this fascinating book takes us behind the scenes to show us the ways in which partisan think tanks succeed (and sometimes fail) in setting the policy agenda. The Thinkers makes a convincing case that such think tanks have played an important part in the increasingly partisan politics that have divided the United States in recent years. The role that these think tanks play makes it more difficult to base policy decisions on scientific or technical grounds—everything, even climate change, becomes partisan.