Article L2122-7-1 of the French General Code of Local Authorities
In communes with fewer than 1,000 inhabitants, deputies are elected under the conditions set out in Article L. 2122-7. When it is necessary, in the event of a vacancy, to appoint a new deputy, the Town Council may decide that he or she will occupy, in the order of the table, the same rank as the elected representative who previously occupied the post that has become vacant.