Tennessee Constitution
Article III - Executive Department.
Section 2

The governor shall be chosen by the electors of the members of the General Assembly, at the time and places where they shall respectively vote for the members thereof. The returns of every election for governor shall be sealed up, and transmitted to the seat of government, by the returning officers, directed to the speaker of the Senate, who shall open and publish them in the presence of a majority of the members of each House of the General Assembly. The person having the highest number of votes shall be governor; but if two or more shall be equal and highest in votes, one of them shall be chosen governor by joint vote of both Houses of the General Assembly. Contested elections for governor shall be determined by both Houses of the General Assembly, in such manner as shall be prescribed by law.