Seth Masket and Dave Peterson in FiveThirtyEight –

Sen. Bernie Sanders (left) and former Vice President Joe Biden are among the race’s top candidates, but a number of early-state Democrats would hate to see them nominated.
One of the most notable features of this primary field is just how many people don’t want to see Sanders as the nominee even though he’s currently third in the national polls. Obviously Sanders is backed by an enthusiastic set of supporters, but we’ve also found that he has a substantial number of detractors in the party.