"A majority of Americans have held at least one of three mistaken impressions about the U.S.-led war in Iraq, according to a new study released Thursday, and those misperceptions contributed to much of the popular support for the war.

[...]

"The analysis released Thursday also correlated the misperceptions with the primary news source of the mistaken respondents. For example, 80 percent of those who said they relied on Fox News and 71 percent of those who said they relied on CBS believed at least one of the three misperceptions.

"The comparable figures were 47 percent for those who said they relied most on newspapers and magazines and 23 percent for those who said they relied on PBS or National Public Radio.

The actual report is online here (PDF).