The borough council is chaired by the borough mayor. The arrondissement mayor is elected from within the arrondissement council. The offices of mayor of the municipality or of mayor of Paris and of arrondissement mayor are incompatible.
The election of the arrondissement mayor following the general renewal of the municipal council or of the Paris council takes place eight days after that of the mayor of the municipality or of the mayor of Paris. The arrondissement council is exceptionally convened by the mayor of the municipality or the mayor of Paris.
The arrondissement council also appoints one or more deputy mayors from among its members, from among the municipal councillors or the Paris councillors and the arrondissement councillors. The number of such deputies may not exceed 30% of the total number of members of the arrondissement council, but may not be less than four.
Subject to the provisions of the preceding paragraphs, the provisions of articles L. 2122-4 to L. 2122-7-2, the first and second paragraphs of article L. 2122-8, the first and third paragraphs of article L. 2122-10, of articles L. 2122-12, L. 2122-15, L. 2122-16, the second and last paragraphs of article L. 2122-18 of article L. 3122-3 and of article L. 4133-3. Where article L. 2122-15 is applied, the representative of the State in the department shall inform the mayor of the municipality or the mayor of Paris of the resignation of the district mayor or his deputies.
The election of the district mayor and his deputies may be challenged as null and void in accordance with the conditions, forms and time limits prescribed for complaints against elections to the municipal council. When the election is annulled or, for any other reason, the arrondissement mayor or his deputies have ceased to hold office, the arrondissement council is convened to proceed with the replacement within the fortnight.