Section 3. Succession to office of governor; acting governor.

(a) Upon vacancy in the office of governor, the lieutenant governor shall become governor. Further succession to the office of governor shall be prescribed by law. A successor shall serve for the remainder of the term.
(b) Upon impeachment of the governor and until completion of trial thereof, or during the governor’s physical or mental incapacity, the lieutenant governor shall act as governor. Further succession as acting governor shall be prescribed by law. Incapacity to serve as governor may be determined by the supreme court upon due notice after docketing of a written suggestion thereof by three cabinet members, and in such case restoration of capacity shall be similarly determined after docketing of written suggestion thereof by the governor, the legislature or three cabinet members. Incapacity to serve as governor may also be established by certificate filed with the custodian of state records by the governor declaring incapacity for physical reasons to serve as governor, and in such case restoration of capacity shall be similarly established.