The divergence between Latin America’s two largest economies, Brazil and Mexico, is widening as the region’s most prominent left- and right-wing leaders adopt stridently different fiscal responses to the COVID-19 pandemic. Their approaches, however, are not what would be expected – and investors are adapting accordingly. The right-wing administration of President Jair Bolsonaro – which came to office last year pledging to lower public spending and cut Brazil’s debt – has opened the taps and spent billions on unemployment benefits.Meanwhile, in Mexico, President Andres Manuel Lopez Obrador’s left-wing government – which promised to tackle poverty with state spending programs – has kept an iron grip on its purse strings. Economists at Credit Suisse have estimated that Brazil’s spending in response to the epidemic was not only three times higher than the median for emerging market economies, it even exceeded the average of wealthy countries.Citing International Monetary Fund data, the bank pegged Brazil’s fiscal effort at a whopping 6.5% of GDP – dwarfing Mexico’s spending, equivalent to just 0.7% of GDP. The short-term economic impact of this fiscal divergence was reflected in the data. While Brazil’s economy shrank by a record 9.7% in the second quarter, Mexico’s plunged by a staggering 17.1%.“The Brazilian economy in 2020 and 2021 (will) be less affected than that of the median of emerging countries,” Credit Suisse economists wrote, crediting Bolsonaro’s largesse. In Mexico, the economic panorama certainly looks bleak. The central bank warned last week that the nation of 130 million people could see its output contract by almost 13% this year – the deepest slump since the Great Depression.Even its rosiest scenario envisages an 8.8% slide this year in the roughly $1.1 trillion economy, before a 5.6% rebound next year.By contrast, economists have been revising upwards their more bearish forecasts for Brazil, amid signs the economy is picking up in the third quarter following Bolsonaro’s calls for lockdowns to be scrapped.A central bank survey of economists now predicts a contraction of 5.3% on average this year. The government says even that is too pessimistic and is forecasting a 4.7% decline – which would still be the biggest since records began in 1900.Yet for investors, looking beyond the short-term economic impact, Lopez Obrador’s austerity may make Mexico’s government bonds and credit markets more attractive in the longer term, analysts say, while upward pressure may build on Brazil’s long-term interest rates.“Mexican bonds could outperform provided there isn’t speculation about a possible downgrade to Mexico’s credit rating,” said Gabriela Siller, an economist at bank Banco BASE. In Brazil, she said, political turbulence was weighing on the performance of sovereign debt. POLITICAL DIVIDENDSWhile Bolsonaro’s government has been roiled by corruption scandals and rifts with Congress, his high spending has brought brightening political fortunes. Although Brazil is the world’s second-biggest COVID-19 hot spot, with over 120,000 deaths, Bolsonaro’s approval ratings have recovered.Political analysts say that is largely down to a 600 reais ($110) monthly stipend transferred directly into the pockets of up to 85 million of Brazil’s poorest people.A Datafolha poll last month found that 37% of those surveyed viewed his government as great or good, compared with 32% in June, while his rejection rate dropped 10 points to 34% who see his government as bad or terrible.Crucially, much of the rise in popularity came in Northeast Brazil – a poor region and a bastion of the left-leaning Workers Party – which could be decisive in Bolsonaro’s 2022 reelection bid.While Bolsonaro is also planning to revamp the “Bolsa Familia” welfare program launched by the Workers Party, many in the government are questioning how sustainable his anti-poverty initiatives are.Bolsonaro announced on Tuesday the COVID stipend would be extended to the end of the year, although at a reduced rate of 300 reais a month.However, the program – which will cost the Treasury around 350 billion reais, about 5% of GDP – has blown a hole in Economy Minister Paulo Guedes’ carefully constructed budget this year. Worryingly for investors, that may come at a political cost.