[1] She was a candidate in the 2015 regional elections on the ecologist list led by Gérard Onesta, then joined La France insoumise in 2017.

[1] As a candidate in the 2017 legislative elections in the first constituency of Hautes-Pyrénées, she qualified for the second round by eliminating former Socialist minister Jean Glavany.

[2] In 2021, she is a candidate in the regional elections on the Occitanie populaire list, supported by La France insoumise in the Hautes-Pyrénées department.

[4] Ferrer was subsequently appointed by Union Populaire activists to lead Jean-Luc Mélenchon's presidential campaign.

[5] On 7 May 2022, she was officially nominated as the candidate for the Nouvelle Union populaire écologique et sociale (NUPES) in the same constituency at a national convention.