You forget that Hillary is the weakest Dem canidiate running. Just look at her rallies not as many folks attending for the Trump rallies which is SRO to the point that folks are outside.
Please don’t forget the difference between enthusiasm and obedience. I spar with lefties almost every day and there is a similar lack of enthusiasm for her as a candidate - or even as a human, but they are hyper-partisans who will not hesitate to pull the lever for the “D” even if they don’t for her.