Current Republican frontrunner Donald Trump trails in hypothetical matchups with three potential Democratic challengers. Vermont senator Bernie Sanders and Vice President Joe Biden lead Trump by double digits, while Hillary Clinton is in a much closer race. Election: 2016
UNH Survey Center
Survey Center, UNH, "Biden, Clinton, Sanders Lead Trump in Hypothetical 2016 Matchups 9/25/15" (2015). All UNH Survey Center Polls. 101.