Miss. Code § 77-5-107
The governing bodies of one-half or more of the municipalities, if any, proposed to be included in the district [or, (a) if the proposed district includes only territory not within the corporate limits of any municipality, then the governing body or bodies of the county or counties containing such territory, or (b) if the proposed district includes a municipality or municipalities and territory not within the corporate limits of any municipality, then the governing bodies of the municipality, or if more than one, the governing bodies of one-half or more of the total number of municipalities proposed to be included in the district and of the county or counties containing such territory] shall first pass resolutions, declaring the public convenience and necessity demand the creation and maintenance of the power district to be known as the "(giving the name) power district." Such resolution shall name the municipalities and describe the unincorporated territory, if any, which it is proposed to include in such district. Any such resolutions so passed shall be presented to the clerk of the board of supervisors of each county containing a part of the proposed district. Such resolutions shall request that an election be called without delay for determining whether such district shall be created.
Each such resolution shall divide the proposed district into five subdistricts, as provided in Section 77-5-123, giving each a number. In the event that the boundaries of the district as originally proposed are changed at the election, the boundaries of the subdistricts shall be changed as hereinafter provided.
Miss. Code § 77-5-107