Upon receipt of an application for registration and a vote by mail ballot by a person who meets the requirements of Section 3302, the county elections official shall determine the following:

1. (a) That the last domicile of the applicant in the United States was in the county to which the person has applied. If the last domicile of the applicant in the United States was in another county, the elections official shall forward the application to that county.
2. (b) That the applicant is not currently registered. If the applicant is registered as a resident of the county, the elections official shall cancel the affidavit of registration.