Obama: “dial testing” of his State of the Union speech showed that the favorability ratings “plummeted” when he vowed to act on climate change if Congress refused to do so

http://m.washingtonpost.com/national/health-science/as-obama-moves-forward-on-climate-he-faces-a-tough-political-task/2013/06/14/050ab062-d4fc-11e2-8cbe-1bcbee06f8f8_story.html