Consumer prices in Argentina rose last month at their fastest pace since the country was exiting hyperinflation more than three decades ago, highlighting the dire state of the economy ahead of Sunday’s presidential election.

Prices rose 8.3% in October on a monthly basis, a notch below September’s figure and less than the 9.45% median forecast of economists surveyed by Bloomberg. Annual inflation accelerated to 142.7%, according to official government data published Monday, also slightly below projections.