Megan defends Rasmussen's health care polling. Mark Blumenthal sorts through data from multiple pollsters. His bottom line:

[Y]es, there are certainly large "house effects" in the health care favor-or-oppose results, but even though different pollsters gauge different levels of support, most pick up more or less the same trends, especially when they ask exactly the same questions on multiple surveys exactly the same way. Any way you slice it, there does appear to be a real tightening of opinion on health reform although as always, these results are snapshots and subject to change.

Earlier comments on Blumenthal's article here.

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