Maud Olivier joined the Socialist Party in 1981, was elected to the list of the mayor of Les Ulis, Paul Loridant in 1983 and became first deputy in 2001. After the death of Jean-Marc Salinier, general councilor, on January 20, 2002, she was elected the general councilor from Les Ulis in May 2002 in a by-election. In 2004, she obtained the vice-presidency in charge of sports. During the legislative elections of 2007, candidate in the fifth constituency of Essonne, she lost, obtaining 49.75% of the votes against outgoing candidate Pierre Lasbordes.
