Once-Bitten Argentine Investors Aim to Avoid Panic on Sunday

(Bloomberg) -- Investors and analysts who wrongly predicted President Mauricio Macri would win a key August primary now say a victory by his challenger on Sunday is a foregone conclusion. The only question left, they say, is how big a margin he will score -- and whether he can afford to tone down the populist campaign-trail rhetoric that pointed him to victory.Money managers -- and virtually every pollster and analyst -- guessed wrong when Alberto Fernandez upended incumbent Macri in a primary v