Polled

That's a representative sample (certainly, it may genuinely be a representative sample of those who actually watched the speech):

A CNN/USA Today/Gallup poll of Americans who watched President Bush's Iraq speech Tuesday night showed that 46 percent had a "very positive" reaction to what they heard.

The poll was taken immediately after the speech, and the 323 adults interviewed were 50 percent Republican, 23 percent Democratic and 27 percent independent. The margin of error was plus or minus 6 percentage points.

Another 28 percent said they were "somewhat positive" about what they heard, and 26 percent said they had a "negative" reaction.

"It's difficult to tell from these poll results how the speech will affect general U.S. public," said CNN polling director Keating Holland.

"Many Americans did not watch the speech. Those who did were 2-to-1 Republican, so most were arguably already in the president's camp."