Mississippi Code Title 23. Elections § 23-15-692

(1) An absent voter who resides outside the United States, who is a member of the United States Armed Forces or who is a family member of a member of the Armed Forces, and who is a registered voter of the State of Mississippi, may use the Federal Write-In-Absentee Ballot as provided for by 42 USCS 1973ff-2 in general, special, primary and runoff elections for local, state and federal offices.

(2) Upon receipt of a Federal Write-In-Absentee Ballot executed by a person who is a registered voter or whose information on the form is sufficient to register or update the registration of that person, the Federal Write-In-Absentee Ballot shall be considered as an absentee ballot request. Nothing in this subsection shall suspend the voter registration deadlines otherwise provided by law.