The determination of the seats on each regional cross-industry joint committee provided for in 1° of article L. 23-112-1 takes into account the votes cast, in the professional and territorial area of competence of the committee, for the measurement of the trade union audience in the context of the ballot provided for in article L. 2122-10-1 and in that of the elections of members representing agricultural production employees to the chambers of agriculture provided for in article L. 2122-6.