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CNN's Candy Crowley (C) conducts the second presidential debate with US President Barack Obama  (R) and Republican presidential candidate Mitt Romney (L) at the David Mack Center at Hofstra University in Hempstead, New York, October 16, 2012.      AFP PHOTO / Saul LOEB        (Photo credit should read SAUL LOEB/AFP/Getty Images)
CNN's Candy Crowley (C) conducts the second presidential debate with US President Barack Obama  (R) and Republican presidential candidate Mitt Romney (L) at the David Mack Center at Hofstra University in Hempstead, New York, October 16, 2012.      AFP PHOTO / Saul LOEB        (Photo credit should read SAUL LOEB/AFP/Getty Images)

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Segundo debate entre Obama y Romney

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Segundo debate entre Obama y Romney

El presidente Obama y Romney debaten sobre la energía no renovable.