Maine constitution
Article IX: general provisions
Section 1

Administration of oaths to Governor, Senators, Representatives, and other officers. The oaths or affirmations shall be taken and subscribed by the Governor before the presiding officer of the Senate, in the presence of both Houses of the Legislature, and by the Senators and Representatives before the Governor, and by the residue of said officers before such persons as shall be prescribed by the Legislature; and whenever the Governor shall not be able to attend during the session of the Legislature to take and subscribe said oaths or affirmations, such oaths or affirmations may be taken and subscribed in the recess of the Legislature before any Justice of the Supreme Judicial Court and provided further that, if the Governor shall be unable to appear and administer the oath to the Senators and Representatives, such oaths shall be administered by the Chief Justice of the Supreme Judicial Court or in the absence of the Chief Justice, by the senior Associate Justice of said Supreme Judicial Court present at the State Capitol on the first day of the term for which said Senators and Representatives shall have been elected.