Carr was a member of House of Delegates from December 20, 2007, to January 11, 2023. He served on the House Environment and Transportation Committee and its subcommittees on Real Property, Local Government, and Land Use & Ethics. He was House Chair of the Joint Committee on Federal Relations, which guides the relationship between State and Federal governments. He was a member of the
Montgomery County Delegation and chair of its Metropolitan Washington Committee, which vets legislation related to local utilities. Focusing on sustainable solutions, he has secured passage of legislation on education, environmental protection, clean energy, economic development, consumer protection, transportation, open government, public safety, affordable housing, and historic preservation. Carr has consistently received endorsements and high ratings from environmental advocacy groups, consumer protection organizations, and the Montgomery County teachers, police and fire fighters. He was defeated by
Takoma Park mayor Kate Stewart in the Democratic primary. ==References==