Greeks have lining up at polling stations and ATMs alike today as the country votes on its financial future.

The private Mega TV channel says turnout had reached 35 percent with four hours to go and people lining up at polling stations in Athens. Turnout must be above 40 percent for the referendum to be valid.

High turnouts are normal in Greece because voting is mandatory — although that law has not been enforced in recent years.

In the country's first referendum since 1974, Greece's 9.8 million voters are choosing Sunday whether to accept demands by international creditors for more austerity measures in return for bailout loans.

As voters flock to polling stations, large lines again have been forming at ATM machines, where worried Greeks can withdraw their daily limit of 60 euros ($67) — part of the banking restrictions imposed June 28 in an attempt to halt a bank run.

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