Chile’s peso, the worst performing major currency this month, is about to get some uncharacteristic help from the central bank. The currency has tumbled 3% in August ahead of presidential elections in November -- the biggest decline among 32 peers tracked by Bloomberg. That has brought its drop in the past four months to 9.5% -- more than double any other major Latin American currency except Peru’s sol. In the next month however, economics may trump politics. Policy makers are expected to raise the key rate by a half-point late on Tuesday, the biggest increase in a decade. And with a retail sales boom at fever pitch, ... (full story)