Whenever the governor transmits to the secretary of state and president of the senate his written declaration that he is unable to discharge the powers and duties of his office by reason of physical or mental incapacity and until he transmits to them a written declaration to the contrary, the president of the senate, for the time being, shall act as governor as provided in article 49, subject to the succession provisions therein set forth. Whenever it reasonably appears to the attorney general and a majority of the council that the governor is unable to discharge the powers and duties of his office by reason of physical or mental incapacity, but the governor is unwilling or unable to transmit his written declaration to such effect as above provided, the attorney general shall file a petition for declaratory judgment in the supreme court requesting a judicial determination of the ability of the governor to discharge the powers and duties of his office. After notice and hearing, the justices of the supreme court shall render such judgment as they find warranted by a preponderance of the evidence; and, if the court holds that the governor is unable to discharge the powers and duties of his office, the president of the senate, for the time being, shall act as governor as provided in article 49, subject to the succession provisions therein set forth, until such time as the disability of the governor is removed or a newly elected governor is inaugurated. Such disability, once determined by the supreme court, may be removed upon petition for declaratory judgment to the supreme court by the governor if the court finds, after notice and hearing, by a preponderance of the evidence that the governor is able to discharge the powers and duties of his office. Whenever such disability of the governor, as determined by his written declaration or by judgment of the supreme court, has continued for a period of 6 months, the general court may, by concurrent resolution adopted by both houses, declare the office of governor vacant. Whenever the governor elect fails to qualify by reason of physical or mental incapacity or any cause other than death or resignation, for a period of 6 months following the inauguration date established by this constitution, the general court may, by concurrent resolution adopted by both houses, declare the office of governor vacant. The provisions of article 49 shall govern the filling of such vacancy, either by special election or continued service of an acting governor. If the general court is not in session when any such 6-month period expires, the acting governor, upon written request of at least 1/4 of the members of each house, shall convene the general court in special session for the sole purpose of considering and acting on the question whether to declare a vacancy in the office of governor under this article.
