As members of Rock the Vote and Vote for Change, the band has encouraged voter registration and participation in United States elections. Vedder was outspoken in support of Green Party presidential candidate Ralph Nader in 2000, and Pearl Jam played a series of concerts on the Vote for Change tour in October 2004, supporting the candidacy of John Kerry for U.S. president. In a "Rolling Stone" feature showcasing the Vote for Change tour's performers, Vedder told the magazine, "I supported Ralph Nader in 2000, but it's a time of crisis. We have to get a new administration in."