On August 15, 2007, EMILY's List endorsed Pingree's campaign for Congress in Maine's 1st district. In December 2007 she received the endorsement of 21st Century Democrats. She was endorsed by a number of labor organizations and many individuals and state officials, including Congressman Rush D. Holt, Jr.; Congresswoman Jan Schakowsky; Maine Senate Majority Leader Libby Mitchell; former Maine Senate Assistant Majority Leader Anne Rand; State Representative Paulette Beaudoin; progressive writer and activist Jim Hightower; the United Auto Workers; Planned Parenthood, and the League of Conservation Voters.