Using the data from the charts in my previous post, here's a look at the size of the Democratic lead in 2004 and 2008. The area shaded green is a Democratic lead; the area shaded red is a Republican lead.
Remember that in 2004, the Democratic convention took place in late July. So when comparing the numbers for mid-August, take into account that Kerry had received his bump. The Swift Boat ads started around the middle of the second week in August, I think.
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© Jed Lewison