Valentin was elected a member of the
Regional Council of Auvergne in
2010 and of the
Regional Council of Auvergne-Rhône-Alpes in
2015. She was first elected to the
National Assembly in the
2017 legislative election in the
1st constituency of
Haute-Loire, with 58.7% of the second-round vote. In Parliament, Valentin was a member of the
Committee on Social Affairs. She stood down at the
2024 election, when her seat was won by Regional Council President
Laurent Wauquiez, her predecessor and
substitute in both 2017 and 2022. She has also held a seat in the
Departmental Council of Haute-Loire for the
canton of Yssingeaux since
2021. ==Political positions==