Duhalde will run in the Justicialist Party. His opponents for the nomination in the party are Senator Adolfo Rodriguez Saa and Francisco De Narvaez. Narvaez was not born in Argentina. SO according to law he cannot be the president. A similar law is in effect in the United States where you must be born in the US to be the president. There are rumors that he will run for mayor of Buenos Aires instead.
So Duhalde predicts it will be a two person race.