Political updates remained in the spotlight in the region's largest economy, Brazil.
According to a CNT/MDA poll released on Tuesday, Brazilian President Luiz Inacio Lula da Silva would beat right-wing Senator Flavio Bolsonaro if they were in a second-round runoff in next month's election.
This follows a host of other surveys pointing to a tight presidential race ahead of the October election, with markets closely tracking shifts in political sentiment.
Investors consider Senator Bolsonaro market friendly and assets have tended to rally when his chances improve, and vice versa.
The Brazilian benchmark stocks index .BVSP inched higher 0.2% after falling 0.9% on Monday. The real BRL= firmed.
Meanwhile, Brazil's retail sales fell more than expected in July, data from statistics agency IBGE showed, underscoring the drag of high borrowing costs on consumer spending.
"High borrowing costs are weighing most heavily on discretionary and durable purchases, while resilient employment and real-income growth continue to provide some support to essential spending," said Andrés Abadía, chief Latin America economist at Pantheon Macroeconomics.
Investor focus will also turn to the Brazilian Central Bank monetary policy committee (Copom) rate decision on Wednesday, where it is expected to ease interest rates to 13.75% from 14.00%, according to a Reuters poll.