«About 74 percent of Sanders’s primary voters also voted for Clinton in November 2016. Another 2 percent didn’t vote but said on the CCES that they would have voted for Clinton if they had voted; it doesn’t seem fair to consider them anti-Clinton voters, so we won’t include them in the #NeverHillary camp. The remaining 24 percent of Sanders voters were #NeverHillary in the general election, however. Of these, about half voted for Trump, while the remaining half voted for Gary Johnson, Jill Stein, another third-party candidate or didn’t vote.
You might be tempted to think that these #NeverHillary voters are leftists who thought Clinton was too much of pro-corporate, warmongering centrist. But relatively few of them were. Less than a fifth of them voted for Stein, for example. Instead, these voters were disproportionately likely to describe themselves as moderate or conservative. Among the 31 percent of self-described conservatives who voted for Sanders in the Democratic primaries, more than half were #NeverHillary voters, for example. A large minority of the independents and Republicans who supported Sanders were #NeverHillary voters as well.
In addition, some factors related to the primary calendar affected the #NeverHillary vote. After Trump won the Indiana primary, effectively wrapping up the Republican nomination, more anti-Clinton voters filtered into the Democratic primaries. And the #NeverHillary vote was lower in states where an open Republican primary or caucus was held on the same date as the Democratic one.
The good news for Sanders is that the states where he benefited the most from the #NeverHillary vote — especially in Appalachia and in the Interior West — have relatively low delegate tallies. So they’re places that he can potentially afford to lose.»