Polls from biased firms shouldn't be taken seriously.
Strategic Vision is trying to get past their partisan past and get a media contract. They had a good (not great) 2004.
Other partisan pollsters have a good record. Democracy Corp (D) had been quite good until 2004 when they showed a real bias and put out some borderline push polls.
The two partisan pollsters that make up the Battleground poll are both generally good, but let partisan ship get in the way of their working together in 2004. This lead to the Democrat half prediciting a Kerry win while the Republicans stuck with the raw figures showing a Bush win roughly on order of his real margin.
The thing with media polls is to look at who the poll is for. If it is for an unnamed client or for a candidate, chuck it. If it is uncredited it is likely being done to get media attention and possibly a media commission in the future.
