Details about her early life and education are not widely documented, but her career in law indicates a background in legal studies.
In January 2025, she was designated by Les Républicains to run in the partial legislative election for the 9th constituency of Hauts-de-Seine following the resignation of Stéphane Séjourné, who became a European Commissioner.
[1] Her candidacy was supported by local political figures, including the mayor of Boulogne-Billancourt, Pierre-Christophe Baguet, and notable members of Les Républicains like Bruno Retailleau, who was the minister of the interior at the time.
Élisabeth de Maistre is portrayed as a figure of traditional conservative values within the French political landscape.
Her involvement in local politics has focused on community welfare and administrative efficiency, reflecting her party's ideology.