
If people keep voting for any blue candidate, then there's no incentive for the Democrats to run people that will ever actually make a positive change, and things just keep sliding to the right and getting worse. I know it feels like now isn't the time to take that kind of risk, but people have been literally saying that for about 40 years now. It's a big part of why things are as bad as they are now. If people stood up to it like I was saying 20 years ago, we would never have had Trump. And because people aren't standing up to it even now, we'll probably have something worse within the next decade.
So, not voting for her is the better choice in the same way that putting disinfectant on your wound is a better choice than letting it fester, even though at first it stings a lot worse than just leaving it alone. I mean imagine saying "ahhh but this cut hurts so bad, now is the LAST time that I can afford to make it feel any worse!"...and then tomorrow you say "oh god it hurts worse now, now is REALLY not the time to make it hurt worse. I need to wait for a better opportunity at some point later...."
The best choices are rarely found by thinking only one step ahead.