Yeah, but I mean I haven't looked at it, but how was the question phrased?
Are the people who admitted to being racist for the Tories, Lib Dems and Labour, just being brutally honest with themselves? As Matt Syed said, the problem isn't the Suarez' of this world, its people like you and me, who can be racist without realising it. There have been a myriad of studies showing that everyone behaves racist in certain conditions.
I've said racist things when my ability to articulate a sentence hasn't caught up with what something complex I've been trying to say. I've also acted in a racist way without meaning to (although I struggle to think of an example at the moment).
In my experience, racial abuse is a very complex issue. I have family friends who I would say are racist, and say racist things on a regular basis, but they themselves probably just would say they aren't racist and are sick of PC Britain. Other people try to be as non-racist as humanly possibly, but will say and do racist things on the right setting.