Ala. Code § 11-1-13

The county commissions of the several counties of the State of Alabama may alter or rearrange the boundary of beat or precinct lines of their respective counties so as to include in them any territory which has been or may be detached from one county and added to another or they may in their discretion create a new precinct or beat in said county out of the territory added to said county and detached from an adjoining county.