12.0.1. If an electoral district is to be used only for the purposes of borough councillor elections, it shall be delimited in such a manner that, according to the document provided for in section 12.1, the number of electors in the district is not more than 15% above or below the quotient obtained by dividing the total number of electors of the borough by the number of districts in the borough. The percentage shall be 25% in the case of a borough having a population of under 20,000 on the date of passage of the draft by-law dividing the territory of the municipality into electoral districts.
A municipality may make exceptions to the first paragraph; the by-law dividing its territory into electoral districts is then submitted to the Commission de la représentation for approval.