Sergio Massa, mayor of Buenos Aires' Tigre district and candidate for congress in the upcoming October 27 midterm elections, listens during a campaign rally in Hurlingham October 23, 2013. Massa, 41, ... more 
Sergio Massa, mayor of Buenos Aires' Tigre district and candidate for congress in the upcoming October 27 midterm elections, listens during a campaign rally in Hurlingham October 23, 2013. Massa, 41, served as President Cristina Fernandez de Kirchner's cabinet chief for less than a year between 2008 and 2009. Argentina shall hold mid-term elections that will determine how much legislative clout President de Kirchner will enjoy during her final two years in office. The combative 60-year-old leader is recovering from surgery to treat a head injury which forced her to abandon the electoral campaign. REUTERS/Enrique Marcarian (ARGENTINA - Tags: POLITICS ELECTIONS) less 
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Reuters | Photo By ENRIQUE MARCARIAN / REUTERS
Wed, Oct 23, 2013 3:30 PM EDT