I think so, Republicans are at their lowest approval ratings since 1992.
So is Hillary, ironically. And for good reason. This is the nth election in a row where 10% on the right and 10% on the left decide the possible presidents for the 100%. And just now, the American people are beginning to realize the severity of the situation.
lol, have you been paying attention at all?
Anyway, to answer this question you must note that pretty much everything between now and November will be about one man - even more so than already - and next to nothing about the other person in the race. Thus her result could swing wildly depending on absolutely nothing at all she does - anything from 48% to 60% or above. What is more likely? Well, little has been more unlikely than what has actually happened so far, so I don't think any prediction based on 'reasonable assumptions' is worth much. If they were, we would be discussing nominee Rubio's chances in Virginia and Pennsylvania instead.
Although if must ask for a prediction, I'd say there is a good chance of that. And there's a small but far-from-zero of it being a 20-point blowout a la 1984. The map isn't as solid as people think, especially when 'generic candidates' aren't running.