My best example is of a 47 year old democrat that did not vote for Hillary because she was not good enough for him, despite believing that Trump was the worst possible option for America in recorded history. His wife can't even speak with him about the topic.
I knew several people over 40 who refused to vote for Hillary because, "I don't like her". They were Bernie supporters. I have no idea what liking a candidate has to do with voting for him/her. Comedian/author Fran Lebowitz was on Bill Mahr several weeks ago and she said, she hated Joe Biden but she sure would vote for him without reservation if he was the nominee. I totally respect her point of view. I've voted for plenty of people who I didn't like. You always have to weigh the alternative and vote for whoever seems better. I don't even use the "lesser of two evils" phrase. I think that's idiotic. There is always one candidate who is better than the other when it comes to the things that are important to you or the things you think are better for the country.
People expect their president to be perfect. They seem to forget that politicians are flawed humans just like the rest of us. And, politicians can't accomplish anything unless they are willing to compromise. Of course, at this time, any of the Democratic candidates are far superior to the that POS we have in office now. I hope Democrats don't fuck it up again. And, I also hope Democrats will work hard to take back the Senate and hold their majority in the House.