Cantwell is a major supporter of fellow Democratic candidates for public office. In 2006, facing her own challenging race, Cantwell used ActBlue to raise $100,000 for Darcy Burner, Peter Goldmark, and Richard Wright, all of whom were facing tough House races in Washington State. In the 2008 cycle, Cantwell was particularly committed to supporting the reelection of Senator Mary Landrieu of Louisiana.