After the 2011 revolution, Toumia joined Ennahdha and was on the list of candidates for the Monastir riding at the 2011 election. As a member of the constituent assembly, she became known for her humorous interventions during sessions. While many of her fellow female Islamist MPs only used classical Arabic, Toumia made comments in French, earning public mockery for her accent and lack of proficiency in the language, and leading to the party leaders asking her to stay away from the media. During the drafting of the new constitution, Toumia was indignant when lawyers described the draft as a step backward for women, arguing that it had been misunderstood.