The Mount Vernon District Democratic Committee is responsible for the grass roots operations of the Democratic Party of Virginia in the Mount Vernon Magisterial District of Fairfax County. The MVDDC is a subdivision of the Fairfax County Democratic Committee.
The MVDDC's precincts run from the southern border of Alexandria and the Huntington Avenue south along U.S. 1, includes all of Fort Belvoir, Mason Neck, Lorotn, Laurel Hill, and much of South Springfield. The Mount Vernon Magisterial District consits of 116,000+ residents and over 72,000 registered voters. The MVDDC consists of over 80 members and 2,200 registered volunteers.