Argentine opposition leader Sergio Massa appears to have done well in the country’s mid term congressional elections, dealing a major blow to President Cristina Fernandez de Kirchner.
Exit polls suggest candidates sponsored by Massa’s Renewal Party have won key seats in the province of Buenos Aires.
The poor showing by Fernandez’s handpicked candidate in the capital and losses by other members of her Front for Victory Party have reduced her coalition majority in Congress.
The president has been unable to campaign for her side since an operation earlier this month to remove a blood clot from her brain.
Fernandez who was re-elected in 2011 on promises of increasing state control has been dogged by a 25 percent rate of inflation.
Voters have been choosing half the members of the the Chamber of Deputies and a third of the Senate.
Argentina’s leader had hoped to secure two-thirds support in both houses to change the constitution allowing her a chance for a third term in 2015.