Jon Kelly of the BBC has been keeping a blog as they tour the US covering the elections. It seems that every post begins with some stereotype. They do discredit the stereotype further in the article, but it's quite revealing at the preconceptions many in the "enlightened" land of P.C. that is Britain possess.
Especially those that hold themselves out as unbiased. Kelly summed up his attitude best with this introduction: "Fancy an easy dig at Americans? Then you'll probably want to use the words "trailer park" at some point. This one handy phrase conjures up every negative image of the US rural poor, whilst at the same lending you an air of aloof superiority."