I'm implying that there is a similar "Bradley effect" which was when "white guilt and racism" skewed polls because white people lied to pollsters about their commitment to an African American politician, when in reality they chose to vote for the white candidate.
With Obama, there is still the fear of being labeled a "white racist" by publicly supporting Romney, so white people lie to pollsters. These white people aren't actually "racists" but may be voting for Romney based on economic or other factors; but they don't want to publicly tell anyone their vote. Along with the racism label, there is a lot of public peer pressure to support the sitting President and a "popular Hollywood-friendly and media-friendly president."
No one is going to tell a pollster they aren't going to buy a movie ticket from a popular celebrity like "Tom Hanks" even if that person has no interest in seeing that movie. They just know the "Hollywood media" and their "Liberal friends" are telling them they have to publicly support Obama, even though they privately support Romney.
So in essence, some fake-Obama supporters are lying to pollsters because of "Pop Culture Pressure"
And how did all of this turned out in 2008?