Mississippi constitution
Article 5
Section 135

Effective January 1, 1964, there shall be a sheriff, coroner, assessor, tax collector and surveyor for each county to be selected as elsewhere provided herein, who shall hold their office for four years and who shall be eligible to immediately succeed themselves in office, provided, however, if the offices of sheriff and tax collector are combined the holder thereof shall not be eligible to immediately succeed himself in office. The Legislature may combine any one or more of said offices in any county or counties and shall fix their compensation. The duties heretofore imposed on the county treasurer shall be discharged by some person or persons selected as required by law.