Mississippi Constitution Art. 5, § 116

The chief executive power of this State shall be vested in a Governor, who shall hold his office for four (4) years. Any person elected to the office of Governor shall be eligible to succeed himself in office. However, no person shall be elected to the office of Governor more than twice, and no person who has held the office of Governor or has acted as Governor for more than two (2) years of a term to which another person was elected shall be elected to the office of Governor more than once.