I got tied Obama/Edwards in first, with 1 different disagreement with both. And then Clinton after that with 3 disagreements. The new closest was Rudy and McCain with 8 disagreements each, and the other republicans were 9 disagreements. So its somewhat accurate for my in that it chose the political side of the spectrum that I'm more likely to lean towards, but I don't know enough about any of the candidates to say I support one or don't support another. But I'm Canadian so it doesn't really matter. And for some of the questions I didn't necessarily know that much about them (I'm not a very knowledgable person concerning economy) so my answers could have gone differently had I not been doing this in the morning after only 1 cup of tea and no shower.
But yeah, if you look at the questions and then the quotes provided to back of the candidate's position on the questions, they aren't always that conclusive (like the increase spending or decrease spending one, the quotes don't specifically say the words "increase" or "decrease" so in some cases its a matter of interpretation). Plus if I may support increasing government spending in some areas and decreasing it in others so it would depend on how the candidate would want to spend the money.