I found very few problems with the survey methodology ( http://www.worldpublicopinion.org/pipa/pdf/dec10/Misinformation_Dec10_quaire.pdf ). The use of a Likert Scale in answering the questions gave voters more choice instead of being pigeonholed into "True; Fale; No Opinion/Don't Know." If the answers only contain three options, then the likelihood your results will not reflect the US population as a whole and the margin of error gets much higher. For this very reason, the Likert Scale is the most commonly used form of answer in surveys.
@Kasz, it was Rand Paul, Kentucky's newest US Senator who was for removing parts of the Civil Rights Act of 1964 that required privately owned businesses who serve the public to desegregate. ( http://www.salon.com/news/opinion/feature/2010/05/20/rand_paul_maddow_segregation_open2010 )
As for Fox News spreading misinformation, Roger Ailes, head of Fox News, was a media consultant for Presidents Nixon, Reagan, and George HW Bush. Roger Ailes also consulted for Rudy Giuliani during his first mayoral campaign in 1989. ( http://en.wikipedia.org/wiki/Roger_Ailes#Early_television ).
Ken Jautz, the head of CNN, gave Glenn Beck his a primetime 7pm CNN HLN slot in effect unleashing this fringe right-wing Mormon idiot upon the world. ( http://www.thewrap.com/media/column-post/ken-jautz-cnn-future-21202 ).
Phil Griffin, the head of MSNBC, is an industry man being with MSNBC when it was founded in 1996 and was with NBC news beforehand. ( http://www.msnbc.msn.com/id/25707456/ )
I would like to part saying Fox News from Roger Ailes on down reflects a good deal of Roger Ailes' biases. Fox News is not "Fair and Balanced" especially when you consider O'Reilly, Hannity, and Beck do not have liberal counterparts with their own show on Fox News. Furthermore, the use of "Government Option" instead of "Public Options" during the US healthcare debate in 2010 shows that the reporters NOT the commentators at Fox News follow orders like Germans during the Third Reich making the reporters at Fox News just as culpable in promoting a conservative view and tone to news reporting. ( http://mediamatters.org/blog/201012090003 ).