Miss. Code § 23-15-19
Any person who has been convicted of vote fraud or any crime listed in Section 241, Mississippi Constitution of 1890, such crimes defined as "disenfranchising," shall not be registered, or if registered the name of the person shall be removed from the Statewide Elections Management System by the registrar or the election commissioners of the county of his or her residence. Whenever any person shall be convicted in the circuit court of his or her county of a disenfranchising crime, the county registrar shall thereupon remove his or her name from the Statewide Elections Management System; and whenever any person shall be convicted of a disenfranchising crime in any other court of any county, the presiding judge of the court shall, on demand, certify the fact in writing to the registrar of the county in which the voter resides, who shall thereupon remove the name of the person from the Statewide Elections Management System and retain the certificate as a record of his or her office.
Miss. Code § 23-15-19