If a voter marks and returns a mail ballot for an election district other than the one in which the voter is a resident and a duly registered elector, such ballot must not be adjudged invalid but, as indicated by the marking of the ballot by the voter, shall be counted as a vote for every candidate appearing thereon who is a candidate for an office to be duly voted for in the elector's election district.
15 Del. C. § 5617A