Thanks, though this clearly does not support the claim that was made.
If this is the source of the claim---and it appears that it probably was---the claim is a serious mis-statement.
Feel free to Google for other articles that state the same, but the overall point is that: People that claim that Sanders' views are widely supported are not at all indicative of what will translate to the voting booth.
That may be true---actually, I think it probably is. But that has nothing to do with the extremely bleak and cynical statement you made:
> Most of America is for the ACA, but against Obamacare, it all depends on how you phrase the question
which, fortunately, appears not to be the case.
Citation needed. I can't believe that without some kind of evidence. I can believe that the wording of the question matters, but not that it's "ACA" vs. "Obamacare."