Associated Press
Former Socialist Prime Minister George Papandreou, 2nd left, is welcomed by supporters prior to casting his ballot in Kalentzi, western Greece Sunday May 6, 2012. Greeks head to the polls Sunday in their most critical and uncertain election in decades, with voters set to punish the two main parties that are being held responsible for the country's dire economic straits. (AP Photo/Yannis Androutsopoulos)

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