She was the national secretary for the economy of the French Socialist Party.

Ahead of the Socialist Party's 2017 primaries, Berger endorsed Vincent Peillon as the party's candidate for the presidential election later that year.

[2] In 2017 Berger lost her seat by a landslide, coming in fifth place in the first round.

Her seat was won by En Marche candidate Pascale Boyer.

This article about a Socialist Party of France politician is a stub.