So many things can happen, and as we've seen in the past it really only takes a single Republican to so something so stupid that it affects the entire party.
These types of assessments and "polls" literally mean NOTHING right now. Fact is, aside from us political junkies, political commentators/talking head shows and the policy wonks, the average Joe isn't going to start paying attention until after the first week in September, 2016.
I’ve also seen Democrats accuse Mitt Romney of being a dog-abusing polygamist who went around giving people cancer. And that the GOP had declared a War on Women. And it WORKED!
So yeah, next November is a LOOOOONG way away.