You are not stating a party preference when you go to vote, you are merely indicating in which party’s primary you wish to participate. Under Virginia law, a dual primary consists of two separate elections (or nominating events) conducted on the same day for the same or different office or offices. These are two distinct events occurring on the same day in accordance with Virginia law. Each requires separate poll books, separate ballots and/or ballots boxes, and separately tallied results. Virginia law only allows you to vote in only one of these two separate elections.