John Sides sizes it up:
I’ve heard commentators opine on whether people’s attitudes toward the ACA will grow more favorable with time, once they see that it helps them in various ways. This presupposes that people’s attitudes about health care reform are predicated on self-interest. … Health care opinions are really based on things that don’t change very much: partisanship, ideology, values. …
This comports with an argument I’ve made previously: public opinion about health care reform derives from cues provided by political elites. Thus, the sharp division between Democratic and Republican leaders produced polarized attitudes among Democrats and Republicans in the public.
The Dish 