In the sections on public opinion (2301) and Presidential Approval, as well as persuasion (2302) we mention that presidential approval tends to rise and fall with the economy.
Here's proof that this still holds true:
The Gallup Poll shows that economic confidence has rebounded considerably in the past three month. and so has Obama's numbers. Some argue that attitudes about the economy are the only real factor explaining people's votes for or against a president. All this talk about campaign strategy and whatnot might be immaterial.