The race between John McCain and Barack Obama is returning to a virtual tie. After Hillary Clinton dropped out eight days ago, Obama moved out to as much as a 7-point lead in the Gallup Daily Tracking Poll. But as of today, the margin has been cut back to just two points at 44%-42%, as you see in the graphic below:

We'll see if this trend continues in the week ahead. Democrats generally poll stronger on weekends, so it will probably widen again tomorrow based on Sunday polling, but may narrow again as the week presses on and the weekend polling rolls off. At any rate, the Obama "bounce" appears to waning.