For a president?
Try to be realistic here. Most non-war presidents see a drop from high to low after entering office.
Cool factoid....
Obama's difference between his peak and low ratings according to gallup is the lowest in the last 12 presidents...if not more. He's also above the average approval rating of the past 12 presidents.
That being said, it's still very early in his term as president. So it's interesting to see if he continues to go lower and lower, or if he sort of hovers. His rating for the past six months or so has hovered.