In the event that the candidates elected to a district committee do not equal the number of party committeemembers by which the district is entitled to be represented under Article 1 (commencing with Section 7400), a vacancy or vacancies exist to the extent of the difference between the number of elected committeemembers and the number of committeemembers by which the district is entitled to be represented. When a vacancy or vacancies exist, they shall be filled by the district committee to which insufficient members were elected.