Obama Approval Rating: What Gives?

If we look at Rasmussen, Obama's got a little more disapproval than approval. If we look at Gallup, there's about 15 percent more approval than disapproval.

This is not a temporary blip or statistical anomaly: both polling services have been consistent in their varying results. There has to be something significantly different either in the polling methodology, or in the question being asked to respondents.