On Saturday at Athens airport, among the streams of tourists heading for Greek island vacations, there were a few expatriated Greeks who had come back for the ballot.
"I came just to vote," Kostas Kokkinos, a 60-year-old Greek living on the EU island nation of Cyprus, told AFP as relatives greeted him in the arrivals hall.
He said he was voting "Yes" in the referendum, and then leaving just a day or two later.
Thanasis Hadzilacos, a professor in his late 60s working at Cyprus's Open University, brought his summer Greek vacation forward because of the referendum.
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"I came earlier in order to vote," he said.
He added that he had been closely following events in Greece via the Internet but was not entirely certain which way he would vote until he spoke face-to-face with his Greek friends.
"I don't think either result will make much difference anyway, especially as it is so close."
The feeling in Cyprus, with its predominant ethnic Greek population and scars from its own 2012-2013 debt crisis, was of "sorrow and pity", Hadzilacos said.