Traders should brace for sharp price swings on Tuesday after the Iowa caucuses

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· *Markets expect a 1.3% swing in the S&P 500 the day after the Iowa caucus, according to Cornerstone Research.*
· *Analysts across the Street have tried their hand at predicting the likely Iowa winner.*
· *Healthcare stocks have been the most reactive to the Democratic race so far, Goldman Sachs said.*
· *Visit...