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French Socialist Party presidential candidate, Benoit Hamon, speaks during a press conference following the inauguration of his campaign headquarters on February 11, 2017 in Paris. In the background, Hamon's campaign's slogan reads in French: "Make the heart of France beat" (Faire battre le coeur de la France). / AFP / PHILIPPE LOPEZ (Photo credit should read PHILIPPE LOPEZ/AFP/Getty Images)

French Socialist Party presidential candidate, Benoit Hamon, speaks during a press conference following the inauguration of his campaign headquarters on February 11, 2017 in Paris. In the background, Hamon's campaign's slogan reads in French: "Make the heart of France beat" (Faire battre le coeur de la France).  / AFP / PHILIPPE LOPEZ        (Photo credit should read PHILIPPE LOPEZ/AFP/Getty Images)

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French presidential election candidate for the left-wing French Socialist (PS) party Benoit Hamon delivers a speech during a meeting focused on health organised by La Mutualite Francaise at the Palais Brongniart in Paris on February 21, 2017. (Photo by Julien Mattia/NurPhoto via Getty Images)

French presidential election candidate for the left-wing French Socialist (PS) party Benoit Hamon delivers a speech during a meeting focused on health organised by La Mutualite Francaise at the Palais Brongniart in Paris on February 21, 2017. (Photo by Julien Mattia/NurPhoto via Getty Images)