This PEW poll on the Supreme Court's ruling on PPACA is quite fascinating, and not a little troubling. It appears that 45% of people polled do not know what the ruling was, with 30% of that aggregate group not knowing what the ruling was at all.
http://www.people-press.org/2012/07/02/division-uncertainty-over-courts-health-care-ruling/A few other interesting snippets. while a majority still oppose the law (40-36, with 24% having
no opinion), the majority of people who paid close attention to the news of the ruling approve the Court's decision (50-45) while the majority who followed less closely disapprove of the ruling (37-24, with 39% offering no opinion).
Finally, despite such seemingly dismal numbers, the poll reports that, with 45% of respondents saying they followed the ruling very closely, it polls as the most widely followed SCOTUS case in recent years. The group that seems to have paid the least attention, unsurprisingly yet still sadly, were people under 30 (37% knew what the Court ruled).