Residents of Paris have a choice of two women as their next mayor, who will be known as the very first "Madame le Maire." A second round of municipal elections will be held on Sunday. The two women vying for the position are Socialist candidate Anne Hidalgo, 54, and conservative Union for a Popular Movement candidate Nathalie Kosciusko-Morizet, 40. The Spanish-born Hidalgo is the current deputy mayor of Paris for incumbant Bertrand Delanoë, and has served in that position since 2001. Kosciusko-Morizet, known by her initials NKM, served as the Minister of Ecology, Sustainable Development, Transport, and Housing in the government of former President Nicolas Sarkozy from 2010-2012. Both women have used social media to promote their candidacy, with Hidalgo conveying her candidacy as one of progress and NKM as "a new energy for Parisians." Dimanche un choix simple : le progrès ou le retour en arrière ? pic.twitter.com/bOBClrC79y— Anne Hidalgo (@Anne_Hidalgo) March 28, 2014 Dimanche, c'est un choix qui engage l'avenir de Paris. Ma profession de foi : http://t.co/kdW5p5ClsA #Paris2014 pic.twitter.com/N03p5LWWEr— N. Kosciusko-Morizet (@nk_m) March 28, 2014