Just to add another dimension to the early reaction to passage, the following table shows differences in the reaction among different groups.
Much of the discussion here has assumed that younger people would object to the bill because they don't want to pay for coverage since they are young and healthy, and that many of the uninsured were voluntarily uninsured and would object to being forced to obtain insurance. The survey shows 58% of each of these groups favoring the adoption. Obviously, higher income people are also the ones being called on to pay most of the cost and the ones who are likely to benefit least from the program since they generally have employer provided coverage now. Yet they favor the adoption by a 49-46% margin. Those with Medicare oppose the legislation by a slight margin. Obviously, their opposition is not ideological but based on the fear that their own socialized coverage will be weakened by extending similar benefits to others.
There is an interesting divide by marital status: "By 51% to 41%, married adults call the bill a bad thing. In contrast, unmarried adults call it a good thing by an even wider margin, 60% to 26%."
BTW, from a statistical perspective, estimates for subgroups are likely to have a much greater statistical "error" than estimates for the populations as a whole.