Virginia's 8th congressional district is a United States congressional district in the Commonwealth of Virginia. It comprises all of Arlington County, portions of Fairfax County and all of the independent cities of Alexandria and Falls Church. The residents of the 8th district are currently represented by Democratic Congressman Don Beyer, elected in November 2014. With a Cook Partisan Voting Index of D+27, it is the most Democratic district in Virginia, and one of the most Democratic white-majority districts in the South.