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Republican is falling behind in battleground states he needs to win
West Virginia points to problems ahead in swing states for the Democrat
Winning streak and narrowing poll margins expose rift among Democrats
Some Sanders supporters say they cannot bring themselves to vote for Clinton
The 2016 presidential race is proving to be among the most awkward in history to predict
Former governor refuses to agree to $4m cap
Republicans target US president’s auto-rescue
Linda McMahon trails her Democratic opponent
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