Since her youth she has been linked to student movements and social movements, especially to the Plataforma de Afectados por la Hipoteca de Madrid (Platform of People Affected by Mortgages, in Madrid). In 2015, she was elected Deputy for Madrid in the Congress of Deputies, being elected again in the elections of 2016 and 2019.
In January 2020 she was appointed Minister, occupying the position in the Ministry of Equality. Irene Montero’s policies focus on inequalities and violence against women, applying an intersectional perspective to protect and expand the rights of all women. She is implementing policies to eradicate male violence in all its forms, including those that occur in couples or ex-partners.