Dorothy Marsh served as President of the League of Women Voters of Thurston County 1996-98. She then became the Voter Service Chair for ten years.
She instituted holding candidate debates filmed by TCTV in addition to "live" forums. She was also an active member on the board of Thurston Community Network, an organization that works to help prevent child abuse and neglect. She is a graduate of Michigan State University, has run a private printing business in Hawaii and actively worked on many land and forest use issues.