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French presidential election candidate for the far-left coalition La France insoumise Jean-Luc Melenchon delivers a speech during a campaign meeting on March 26, 2017 in Rennes, western of France. (Photo by FRED TANNEAU / AFP) (Photo by FRED TANNEAU/AFP via Getty Images)

French presidential election candidate for the far-left coalition La France insoumise Jean-Luc Melenchon delivers a speech during a campaign meeting on March 26, 2017 in Rennes, western of France. (Photo by FRED TANNEAU / AFP) (Photo by FRED TANNEAU/AFP via Getty Images)

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French presidential election candidate for the far-left coalition La France insoumise Jean-Luc Melenchon is seen on giant screens as he delivers a speech during a campaign meeting on March 26, 2017 in Rennes, western of France. / AFP PHOTO / FRED TANNEAU (Photo credit should read FRED TANNEAU/AFP via Getty Images)

French presidential election candidate for the far-left coalition La France insoumise Jean-Luc Melenchon is seen on giant screens as he delivers a speech during a campaign meeting on March 26, 2017 in Rennes, western of France. / AFP PHOTO / FRED TANNEAU        (Photo credit should read FRED TANNEAU/AFP via Getty Images)

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French presidential election candidate for the far-left coalition La France insoumise Jean-Luc Melenchon delivers a speech during a public meeting on February 4, 2017, in Champagney, eastern France. / AFP PHOTO / SEBASTIEN BOZON (Photo credit should read SEBASTIEN BOZON/AFP via Getty Images)

French presidential election candidate for the far-left coalition La France insoumise Jean-Luc Melenchon delivers a speech during a public meeting on February 4, 2017, in Champagney, eastern France.   / AFP PHOTO / SEBASTIEN BOZON        (Photo credit should read SEBASTIEN BOZON/AFP via Getty Images)