SIVAS, TURKEY - APRIL 11: Men sit in front of an Evet (YES) campaign tent in the main square on April 11, 2017 in Sivas, Turkey. Campaigning by both the "Evet"(Yes) and "Hayir" (No) camps has intensified across the country ahead of Turkey holding a constitutional referendum on April 16, 2017. Turks will vote on 18 proposed amendments to the Constitution of Turkey. The controversial changes seek to replace the parliamentary system and move to a presidential system, which would give President Recep Tayyip Erdogan executive authority. (Photo by Chris McGrath/Getty Images)
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Getty Images News Chris McGrath