Miss. Code § 25-5-17
Such certificate by the county registrar shall be prima facie evidence of the facts stated therein and of the qualification of the electors whose signatures are thus certified. The Governor shall consider and count only those signatures on such petition as shall be so certified by the registrar; provided, however, that any officer sought to be removed or any citizen of the county shall have the privilege of submitting evidence in writing, under oath, to the Governor as to the question of whether or not any signator to the petition was in fact a qualified elector at the time of the signing of the petition, or has since died. The decision of the governor as to whether or not any particular person was or was not a qualified elector at the time of the signing of the petition, or whether or not any particular person has since died, shall be final and shall not be subject to review. The status of the signator as to whether or not he or she was a qualified elector at the time of signing the petition shall be determined as of the date of the petition and not by any other date.
Miss. Code § 25-5-17