I think this is what set off the reframing craze: Don’t Think of an Elephant!: Know Your Values and Frame the Debate—The Essential Guide for Progressives

Don’t Think of an Elephant! is the definitive handbook for understanding what happened in the 2004 election and communicating effectively about key issues facing America today. Author George Lakoff has become a key advisor to the Democratic party, helping them develop their message and frame the political debate.

In this book Lakoff explains how conservatives think, and how to counter their arguments. He outlines in detail the traditional American values that progressives hold, but are often unable to articulate. Lakoff also breaks down the ways in which conservatives have framed the issues, and provides examples of how progressives can reframe the debate.