U.S. News and World Report: As House Democratic leaders try to cobble together a coalition on climate change legislation, a poll released this week suggests that most voters support their general efforts. The poll, conducted by the Mellman Group, a Democratic firm, and released by the Pew Environmental Group, finds that 77 percent of voters favor action “to reduce global warming emissions” and that only 22 percent of voters say they would view members of Congress less favorably “if they support a comprehensive …