Interviews with 1,030 adult Americans conducted by telephone on March 19-21, 2010.That's about the most unhelpfully counterproductive question you could ask in a survey as it presumes not one iota of familiarity with the very subject the respondent is being asked to speak about.
As you may [sic] know, the U.S. House of Representatives and the U.S. Senate are trying to pass [this was pre-vote and pre-euphoria] final legislation that would make major changes in the country’s health care system. Based on what you [may] have read or heard about [or not] that legislation, do you generally favor it or generally oppose it?
It's like asking, based on what you know of biology, did Jesus ride a dinosaur? Needless to say top-of-the-masthead commentator Charlie Sykes of the "nonpartisan" "polling" outfit WPRI finds it compelling.
CNN Opinion Research (.pdf; 7 pgs.)