oversampling

According to a CNN poll, support for ObamaCare jumped 14 points after the President's speech to a joint session of Congress.

The problem? The poll oversampled Democrats by a whopping 45%-18% margin. How's that for a representative sample?

"The sample of speech-watchers in this poll was 45 percent Democratic and 18 percent Republican. Our best estimate of the number of Democrats in the voting age population as a whole indicates that the sample is about 8-10 points more Democratic than the population as a whole."

In other words, CNN is admitting this poll is inaccurate, irrelevant and meaningless. It's so biased why even report the findings of the poll?

My guess about Obama's health care speech? It's not going to move the needle as they say. I think people's minds are made up. August was the death of ObamaCare. Hopefully.