Región de Atacama
During the Eduardo Frei Ruiz-Tagle administration Provoste was the Atacama Region director of the National Women's Service (1996–97) and governor of the Huasco Province (1997–2001). During President Ricardo Lagos's tenure she was intendant of the Atacama Region (2001–04), minister of Planning (2004–06) and, during Michelle Bachelet's presidency, National Executive Director of Integra Foundation (2006) and minister of Education (2006–08).