(Bloomberg) -- Investors in Argentina are starting to brace for a 20% currency devaluation after the country’s Aug. 13 primary election, the first time they have converged around the timing of a long-expected policy change.Most Read from BloombergBonds Drop as Stocks Drift in Run-Up to Jobs Data: Markets WrapFitch’s US Credit Downgrade Sparks Criticism Along With UneaseCanada PM Justin Trudeau Splits With Wife Sophie GregoireS&P 500 Has Worst Day Since April After Big Rally: Markets WrapNYC Cons