She served as a member of the French National Assembly representing Yvelines, from 1986 until 2007, when she was appointed Minister of Housing and Urban Development by President Nicolas Sarkozy.

In a judgement dated 18 December 2015 the correctional court of Paris condemned Boutin to a fine of €5000 and €2000 for legal damages for having said that homosexuality was an abomination.

In 1993, Boutin founded the anti-abortion NGO Alliance pour les droits de la vie (ADV) (English: Alliance for Human Life), considered the largest anti-abortion organization in France.

In 1998, Boutin became somewhat famous because of a five-hour speech in opposition to the PACS domestic partnership plan, arguing that its adoption by the government would encourage homosexuality.

[7] In 2006, Boutin supported the "global license" flat-fee authorization for sharing of copyrighted files over the Internet in a heated parliamentary debate on the DADVSI law.

[8] She also has been an advocate for a guaranteed minimum income,[9] as well as expanded housing rights (Droit au logement).

[10] She has considered the situation of prisons in France to be a scandal and has argued for a drastic reduction of inmates as well as improving their life-conditions.

[14] In October 2012, Christine Boutin stated that she remained strongly opposed to same-sex marriage, claiming that it would lead to polygamy.

Around the same time, it was also revealed that she received €800,000 from the UMP before deciding not to run for the forthcoming presidential election against its candidate, Nicolas Sarkozy.

In 2014, Christine Boutin launched the "Force Vie" list for the 2014 European elections,[17] and failed to secure the 3% of votes required for reimbursement of campaign expenses in any constituency.