Texas By-elections to the 15th legislature of the French Fifth Republic2018 28 January: Val-d'Oise's 1st Territoire de Belfort's 1st 4 March: French Guiana's 2nd 11 March: Haute-Garonne's 8th 18 March: Loiret's 4th Mayotte's 1st 8 April: French residents overseas' 5th 15 April: Wallis and Futuna's 1st 23 September: Réunion's 7th 18 November: Essonne's 1st 2020 20 September: Seine-Maritime's 5th Val-de-Marne's 9th Yvelines's 11th Réunion's 2nd Haut-Rhin's 1st Maine-et-Loire's 3rd 2021 30 May: Pas-de-Calais's 6th Paris's 15th Indre-et-Loire's 3rd Oise's 1st