Under Virginia election laws, you have the right as a voter to enter the full name of a write-in candidate if the candidate of your choice is not on the ballot, except in party primaries.
Electronic voting machines, which are used in Prince William County, Manassas and Manassas Park, all provide the ability to type in the name of a write-in candidate. When the candidates for Commonwealth Attorney are displayed, press the button marked "write-in" or "other", and type in "Ham Sandwich" in the appropriate area. When you have made all of your selections, a screen will be displayed showing you the candidates you have selected, which should clearly show "Ham Sandwich" as your selection for Commonwealth Attorney.
If you encounter any problems, or have questions, please request assistance from a poll worker. They will be happy to help, and answer any questions you may have.