Code of Alabama
Article 2 - Political Parties.
Section 17-13-40 - "Political Party" Defined.

An assemblage or organization of electors which, at the general election for state and county officers then next preceding the primary, casts more than 20 percent of the entire vote cast in any county is hereby declared to be a political party within the meaning of this chapter within such county; and an assemblage or organization of electors which, at the general election for state officers then next preceding the primary, casts more than 20 percent of the entire vote cast in the state is hereby declared to be a political party within the meaning of this chapter for such state.