Penelope Gross served on the Fairfax County Board of Supervisors from 1996-2023. She identifies as a Democrat.
2006
–Endorsed Harris Miller (D) for Senator of Virginia (lost primary)
2014
–Endorsed John Foust (D) for Representative of Virginia, 10th District (lost general election)
2017
–Endorsed Justin Fairfax (D) for Lieutenant Governor of Virginia (won)
2021
–Endorsed Terry McAuliffe (D) for Governor of Virginia (lost general election)
–Endorsed Andria McClellan (D) for Lieutenant Governor of Virginia (lost primary)
–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 James Walkinshaw (D) for Representative of Virginia, 11th District (won)
The Endorsement Project 