How is the national electoral register created?

France, OSCE/ODIHR Needs Assessment Mission Report, ‘Presidential and Parliamentary Elections 2017, Voter Registration, PP 5-6’, accessed 2 October 2018

Citizens who turn 18 are automatically registered by their local administration, but those who change residence are required to register to vote. Local administrations, which work under the direction of Ministry Interior, are mainly responsible for voter registration. See Source for further details.