Kristin Combs is the Secretary of the Green Party of the United States and is the chair of the Philadelphia Green Party and previously served as chair of the Green Party of Pennsylvania. As chair of her state party, she tripled the annual budget, did a full review of the bylaws, and reworked the party structure to make sure it reflects Green Party values.

She is on the Green Party of the U.S. Apportionment Review and Accreditation Committees.