S&P analyst Joydeep Mukherji says Argentina's woes have not had any major impact on the other economies in the region.
Leftist candidate Fernando Haddad has significantly reduced the lead that frontrunner Jair Bolsonaro has enjoyed for several months, according to a poll published over the weekend. The poll also shows Haddad beating Bolsonaro in a runoff vote.
The landlocked nation wanted the International Court of Justice to order Chile to sit down at the negotiating table over sovereign access to the Pacific.
State-run banks saw their loan books contract in the 12 months through June while private sector banks expanded their loan portfolios.
The finance ministry said public spending and revenue through August had been better than programmed. Economist Jonathan Heath confirmed he had accepted the nomination to join the central bank in January.