How to vote in the Greek election
6 May 2012 Last updated at 12:07 BST
Greeks are voting in parliamentary polls, with the country's two mainstream parties expected to lose support to anti-austerity candidates.
The centre-left Pasok and centre-right New Democracy parties have been in coalition since last November.
They are both expected to suffer due to opposition to the austerity measures imposed by the government in exchange for international bailout funds.
The BBC's Mark Lowen explains the voting procedure.