Miss. Code Ann. § 23-15-835: Miss. Code Ann. § 23-15-835

The election commissioners of the several counties to whom the writ of election may be directed shall, immediately upon receipt of the writ, give notice of the special election to fill a vacancy in such county or county district office by posting notices at the courthouse and in each supervisor's district in the county for ninety (90) days before the election; and the election shall be prepared for and held as in case of a general election.