The American voters considered most likely to be natural Hillary Clinton voters are withdrawing their support.
That's according to the latest Washington Post / ABC News public opinion poll - which also notes, the email issue had emerged as the top issue for the Clinton campaign.
Our U.S correspondent Priscilla Huff reports:
IN: "Just forty-two...
OUT: SOC
DUR: 57
POT: 42 or 32
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