A consensus of polls has Sanders trailing Clinton in Pennsylvania by 15 percentage points, according to RealClearPolitics.
He trails her in the delegate count by a total of 1,428 to 1,151. A win for Sanders in Pennsylvania would be crucial, as the primary season is winding down. Candidates need 2,383 to clinch the nomination; 1,646 delegates remain up for grabs.
>>When is the 2016 Pennsylvania Presidential Primary?
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