Barbara Kanninen serves on the Arlington County School Board. She identifies as a Democrat.
2021
–Endorsed Terry McAuliffe (D) for Governor of Virginia (lost general election)
–Endorsed Hala Ayala (D) for Lieutenant Governor of Virginia (lost general election)
–Endorsed Mark Herring (D) for Attorney General of Virginia (lost general election)
2022
–Endorsed Don Beyer (D) for Representative of Virginia, 8th District (won)
2025
–Endorsed Levar Stoney (D) for Lieutenant Governor of Virginia (lost primary)