Original sentence: Those who obtained their news primarily from Fox News were three times as likely to believe that evidence confirming WMD had been discovered in Iraq than those who relied on PBS and NPR for their news, and one third more likely than those who primarily watched CBS
Edited sentence: Those who obtained their news primarily from Fox News were three times as likely to believe that evidence confirming WMD had been discovered in Iraq than those who relied on more liberal news outlets like PBS and NPR for news, and one third more likely than those who primarily watched CBS