I'm a man who, if polled, would disapprove of Clinton. But I'm still voting for her in the general (assuming she's the nominee). I imagine that's the case with a lot of her disapproval in general. I'm not as worried about favorable numbers translating to republican votes as i am about turnout being depressed as a result. Especially if someone perceived as a "moderate" is nominated on the republican side and Clinton struggles to scare people to the polls to vote for her.