(2LtoR) French Socialist Party (PS) member and candidate for the left-wing primary ahead of the 2017 presidential election Gerard Filoche, French feminist and former Socialist party member Caroline de Haas, French Socialist Party (PS) MP Jean-Marc Germain and former French Economy Minister and candidate for the left-wing primary ahead of the 2017 presidential election Arnaud Montebourg Arnaud Montebourg attend the summer conference of the French dissident Socialist MPs known as "Les Frondeurs" (The Insubordinates) on September 11, 2016 in La Rochelle, southwestern France. / AFP PHOTO / XAVIER LEOTYXAVIER LEOTY/AFP/Getty Images