The issue focused on concerns over electronic voting machines and digital voting systems in Democratic presidential nominee Hillary Clinton's election campaign.

Despite negative polling numbers for Clinton, Sanders carried Virginia by 11 percentage points nationally last week. That included eight electoral votes against Republican candidate Donald Trump. He won those races by 16 percentage points nationwide.

Clinton received 48 percent of the vote in Iowa and Michigan. Obama beat Trump by 17 percentage points in Pennsylvania. Both polls showed Clinton ahead by 15 percentage points.Description

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