Gallup: Obama, McCain Tied

Today's Gallup tracking poll shows Obama with 45%, McCain with 44%. This is within the margin of error and essentially a tie. Go look at the trend lines over the last four days. Obama cannot be pleased with their direction. Gallup concludes:

The story of the election through the summer months has been a close race that simply does not seem to want to change.

To be sure of winning, Obama has to be about 10% above McCain, because of the Bradley Effect. He hasn't been able to pull above 50% at any point recently, perhaps not ever.