Washington (CNN) - Support for the health care reform bill has increased as a result of Sunday's approval the legislation by the House, according to three national polls conducted after the vote.
Two of the surveys, by CBS News and Quinnipiac University, asked virtually the same question about health care both before and after Sunday's vote, and in both polls support for the legislation rose by four to five percentage points.
USA Today/Gallup, the third poll conducted after the vote, did not ask the same question as they did before action by the House, but their results are generally consistent with the indication in the other polls that support for the health care bill has gone up.
How many people now support the health care bill? That is trickier to say because the polls asked very different questions.
USA Today/Gallup asked whether Americans thought "it was a good thing or a bad thing that Congress passed this bill."
This question concentrated on the passage of the bill, not the contents of the bill. Since Americans generally like to see their leaders take action, it's not surprising that this wording produced the highest positive response - 49 percent who approved of the 'passage' of the bill. The Gallup poll indicates that four in 10 say passage of the bill was a bad thing.
CBS asked what Americans thought of "the current health care reform bill." Quinnipiac asked what Americans thought of "the changes in health care passed by Congress." These questions concentrated on the 'contents' of the bill. CBS indicated 42 percent approving of the bill; Quinnipiac indicated 40 percent approval. Forty-six percent of those questioned in the CBS poll disapproved of the bill, with 49 percent of those questioned by Quinnipiac disapproving of the legislation.
"Some of the difference is no doubt due to the fact, noted in several CNN poll, that some Americans opposed the bill because it was not liberal enough." says CNN Polling Director Keating Holland. "It's likely that people in this group still dislike the contents of the bill, but are pleased that a Democratic Congress got something done on this issue."
The USA Today/Gallup poll was conducted Monday, the day after the House vote. The CBS News and the Quinnipiac University surveys were conducted Monday and Tuesday.
Tuesday, President Obama signed into law the health care legislation passed last year by the Senate and Sunday by the House. The House also passed a package of fixes that were added by House Democrats to the Senate health care reform bill. The fixes were passed by the Senate on Thursday, with some slight alterations. The House was expected to approve the Senate fixes late Thursday.
–CNN Deputy Political Director Paul Steinhauser contributed to this report