[3] Election is open to European citizens living in the country, but since 2020, 800 English/British people have lost their electoral capacities due to Brexit.

[5] In communes with 1,000 or more inhabitants, electoral lists contest a two-round proportional representation system with a majority bonus.

The April 2018 and May 2019 Ifop polls were commissioned by Esprit Bordeaux, an association founded by supporters of Alain Juppé, later backing Nicolas Florian.

The May 2019 BVA poll was commissioned by Les amis de Lionel Royer-Perreaut, the micro-party of its namesake.

The September 2018 OpinionWay poll was paid for by the city of Mulhouse and the outgoing majority led by Michèle Lutz.

The January 2019 Viavoice poll was conducted for La République En Marche!, and did not test any potential candidates other than Benjamin Griveaux.

managed to retain mayorship of Le Havre by the Prime minister Edouard Philippe (he resigned national position on 3 July).

Anne Hidalgo and Martine Aubry retained their respective mayoralties of Paris and Lille.

[11] Only 40% of the electorate participated in the second round,[12] a significant drop from the prior local elections, likely due to concerns regarding the COVID-19 pandemic.