The League of Conservation Voters announced today that they’re endorsing Democratic presidential nominee Barack Obama, citing the freshman senator’s policies on climate change and clean energy. “When you look specifically at the twin challenges of cutting global warming pollution and moving toward a clean energy future, on those issues Barack Obama has the most comprehensive plan we have ever seen for a presidential nominee,” LCV president Gene Karpinsky said. LCV gave Obama a rating of 67 in their annual scorecard this year, lower than his previous average due to missed votes while on the campaign trail. He maintains an 86 percent rating overall for his first three years representing Illinois in the Senate. His main opponent, John McCain, has a lifetime LCV score of 24 percent, and earned a zero for 2007 after missing every vote LCV included in this year’s tally. LCV joins Sierra Club and Friends of the Earth, who have also endorsed Obama.