From what I’m seeing in social media, Clinton doesn’t appear to be very popular among key democrat demographics like the young and minorities.
Due to my wife’s profession she has a lot of liberal contacts. She shows me their comments on the Facebook. They are not very happy about Clinton and desperately want to vote for their hero Warren. If she is not an option they are trying very hard to find reasons to vote for Hillary. Right now their latest attempt to group together is based on the thought a Republican President might have the opportunity to replace 4 justices.
Over at DU, the consensus of opinion is that they will hold their nose and vote for her, but can’t muster up much enthusiasm and would far rather have Warren, Biden, Sanders, or O’Malley.