Yes, your'e right. But the point stands that a majority want it, so people arguing against it shouldn't use the argument that the new health care will be so horrible... because the majority of people supporting it probably A) can't afford it at all or B) can't afford good health care.
People need to find a better argument, like it's unfair, or it won't work for X do ented reason. The fact is, other countries have universal health care and get good ratings from the people. (Switzerland is one of them, I believe.)