On Saturday, Afghans will head to the polls to choose a new president from the two contestants left in the race, Ashraf Ghani and Abdullah Abdullah. Sharon Behn reports from Kabul that security is tight and the race is too close to call.
Afghanistan Readies for Presidential Run-off

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A man loads ballot boxes and other election material onto a donkey to be transported to polling stations not accessible by road, in Shutul, Panjshir province, June 13, 2014.

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A man walks with a donkey loaded with ballot boxes and other election material to be transported to polling stations not accessible by road in Shutul, Panjshir province, June 13, 2014.

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A woman walks past a mural to support voting in Kandahar, south of Kabul, June 13, 2014.

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Afghan election workers in a warehouse carry ballot boxes and election materials, in Kabul, June 13, 2014.